Which of these numbers prime 20 or 21 or 22 or 23 or 24?

Which of these numbers prime 20 or 21 or 22 or 23 or 24?
by

1 Answer

Answer :

You can work this out, Prime numbers can only be divided bythemselves or 1. Therefore as 20 can be divided by 2 it it notprime. The same is true for 22 and 24. Thus the prime must beeither 21 or 23.See if either of these numbers can be divided by 7, if it canthen the prime must be the other number.
by
selected by

Related questions

How can you make 24 using the numbers 21 22 23 and 20?

Description : How can you make 24 using the numbers 21 22 23 and 20?

Last Answer : (23-21) x 22-20

Three consecutive numbers such that twice the first, 3 times the second and 4 times the third together make 182. The numbers in question are 1. 18, 22 and 23 2. 18, 19 and 20 3. 19, 20 and 21 4. 20, 21 and 22 5. 21, 22 and 23

Description : Three consecutive numbers such that twice the first, 3 times the second and 4 times the third together make 182. The numbers in question are 1. 18, 22 and 23 2. 18, 19 and 20 3. 19, 20 and 21 4. 20, 21 and 22 5. 21, 22 and 23

Last Answer : Answer- 3( 19,20,21) Explanation:- let number be x,x+1,x+2 2x + 3(x+1)+4(x+2)=180 x=19 so numbers are 19,20,21

The banks will be licensed as payments banks under ______ of the Banking Regulation Act, 1949. A. Section 21 B. Section 22 C. Section 23 D. Section 24 E. None of the Above

Description : The banks will be licensed as payments banks under ______ of the Banking Regulation Act, 1949. A. Section 21 B. Section 22 C. Section 23 D. Section 24 E. None of the Above

Last Answer : B. Section 22 Explanation: The payment banks will be licensed as payments banks under Section 22 of the Banking Regulation Act, 1949 and will be registered as public limited company under the Companies Act, 2013.

The small finance banks will be licensed under ______ of the Banking Regulation Act, 1949. A. Section 21 B. Section 22 C. Section 23 D. Section 24 E. None of the Above

Description : The small finance banks will be licensed under ______ of the Banking Regulation Act, 1949. A. Section 21 B. Section 22 C. Section 23 D. Section 24 E. None of the Above

Last Answer : B. Section 22 Explanation: The small finance banks will be licensed under Section 22 of the Banking Regulation Act, 1949.

What is the total number of literate people in city 'A'? 1) 21.62 lakh 2) 22.18 lakh 3) 23.94 lakh 4) 24.63 lakh 5) 25.02 lakh

Description : What is the total number of literate people in city 'A'? 1) 21.62 lakh 2) 22.18 lakh 3) 23.94 lakh 4) 24.63 lakh 5) 25.02 lakh

Last Answer : 3) 23.94 lakh

In a Examination a candidate has to score minimum of 24 marks inorder to clear the exam. The maximum that he can score is 40 marks. Identify the Valid Equivalance values if the student clears the exam. A. 22,23,26 B. 21,39,40 C. 29,30,31 D. 0,15,22

Description : In a Examination a candidate has to score minimum of 24 marks inorder to clear the exam. The maximum that he can score is 40 marks. Identify the Valid Equivalance values if the student clears the exam. A. 22,23,26 B. 21,39,40 C. 29,30,31 D. 0,15,22

Last Answer : C. 29,30,31

Madhesh does half work as much as vinith in three eighth of the time. If together they take a day to complete the work, how much time shall vinith take to do it? a) 21 b) 22 c) 23 d) 24

Description : Madhesh does half work as much as vinith in three eighth of the time. If together they take a day to complete the work, how much time shall vinith take to do it? a) 21 b) 22 c) 23 d) 24

Last Answer : A Suppose vinith takes x days to do the work Madhesh takes (2*3/8 x) = 6/8x i.e., 3/4x days to do it (madhesh + vinith’s) 1 day work = 1/9 Therefore 1/x +4/3x = 1/9 (3+4) / 3x = 1/9 7/3x = 1/9 3x = 9*7 X = 63/ 3 =21 Vinith takes 21 days to do the work.

The sum of the three number is 68.If the ratio of the first to second is 3:2 and that of the second to the third is 5:3 , then the second number is approximately A) 21 B) 22 C) 23 D) 24 E) None of these

Description : The sum of the three number is 68.If the ratio of the first to second is 3:2 and that of the second to the third is 5:3 , then the second number is approximately A) 21 B) 22 C) 23 D) 24 E) None of these 

Last Answer : Answer: B A: B = 3:2 B:C = 5 : 3 B:C =(5×[2/5]) : (3×[2/5])= 2: (6/5) A:B:C = 3:2:(6/5) = 15:10:6 Second number = (10/31)×68 = 21.9 = 22

The mode of the data 20, 23, 22, 23, 22, 20, x, 21 is 22. Find the value of x.

Description : The mode of the data 20, 23, 22, 23, 22, 20, x, 21 is 22. Find the value of x.

Last Answer : The mode of the data 20, 23, 22, 23, 22, 20, x, 21 is 22. Find the value of x.

The average age of A and B is 20 years. If C were to replace A, the average would be 19 and id C were to replace B,the average would be 21 . The ages of A, B and C are (in years) (a) 22, 17,16 (b) 22, 18, 20 (c) 30, 18, 15 (d) 23, 17 ,15

Description : The average age of A and B is 20 years. If C were to replace A, the average would be 19 and id C were to replace B,the average would be 21 . The ages of A, B and C are (in years) (a) 22, 17,16 (b) 22, 18, 20 (c) 30, 18, 15 (d) 23, 17 ,15

Last Answer : 22, 18, 20 Hint : A + B = 2 x 20 C + B = 2 x 19 A + C = 2 x 21

The diameter of hole for 20 dia rivet shall be a) 23 mm b) 18 mm c) 21.5 mm* d) 22 mm

Description : The diameter of hole for 20 dia rivet shall be a) 23 mm b) 18 mm c) 21.5 mm* d) 22 mm

Last Answer : c) 21.5 mm*

Rashid buys 3 books for Rs: 16 each and four books for Rs: 23 each. What will be the average price of the books? A. 18 B. 20 C. 22 D. 24

Description : Rashid buys 3 books for Rs: 16 each and four books for Rs: 23 each. What will be the average price of the books? A. 18 B. 20 C. 22 D. 24

Last Answer : ANSWER: B

Rashid buys 3 books for Rs: 16 each and four books for Rs: 23 each. What will be the average price of the books? A. 18 B. 20 C. 22 D. 24

Description : Rashid buys 3 books for Rs: 16 each and four books for Rs: 23 each. What will be the average price of the books? A. 18 B. 20 C. 22 D. 24

Last Answer : ANSWER: B

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Description : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50'. What number is missing? -Riddles

Last Answer : 22

A tank can be filled by a tap in 6 hours and emptied by an outlet pipe in 8 hours. How long will it take to fill the cistern if both the taps are opened together? 1. 24 hours 2. 22 hours 3. 21 hours 4. 18 hours 5. 20 hours

Description : A tank can be filled by a tap in 6 hours and emptied by an outlet pipe in 8 hours. How long will it take to fill the cistern if both the taps are opened together? 1. 24 hours 2. 22 hours 3. 21 hours 4. 18 hours 5. 20 hours

Last Answer : 1;

Which of the following complexes will mostly likely abosorb visible light ? (At nos. Sc=21,Ti=22,V=23,Zn=30)

Description : Which of the following complexes will mostly likely abosorb visible light ? (At nos. Sc=21,Ti=22,V=23,Zn=30)

Last Answer : Which of the following complexes will mostly likely abosorb visible light ? (At nos. Sc=21,Ti=22,V=23,Zn=30) A. `[Sc ... )` D. `[Zn(NH_(3))_(6)]^(2+)`

the mode of the data 21, 26, 22, 29, 23, 29, 26, 29, 22, 23 is?

Description : the mode of the data 21, 26, 22, 29, 23, 29, 26, 29, 22, 23 is?

Last Answer : the mode of the data 21, 26, 22, 29, 23, 29, 26, 29, 22, 23 is?

As per the Union budget 2019, India will get its first bullet Train in which year? A. 2022-25 B. 2021-22 C. 2020-21 D. 2022-23

Description : As per the Union budget 2019, India will get its first bullet Train in which year? A. 2022-25 B. 2021-22 C. 2020-21 D. 2022-23

Last Answer : B [2022-23] Explanation: Explanation: India will get its first bullet train between Mumbai and Ahmedabad in 2022-23.

On which date is India likely to experience the shortest day? (1) December 22 (2) March 21 (3) June 22 (4) September 23

Description : On which date is India likely to experience the shortest day? (1) December 22 (2) March 21 (3) June 22 (4) September 23

Last Answer : (1) December 22 Explanation: 21-23 December, also known as winter solstice, is the shortest day of the year in the northern hemisphere. India, being in the northern hemisphere, experiences its ... The winter solstice occurs at the moment when the North Pole is tilted furthest away from the sun.

On which date is India likely to experience the shortest day? (1) December 22 (2) March 21 (3) June 22 (4) September 23

Description : On which date is India likely to experience the shortest day? (1) December 22 (2) March 21 (3) June 22 (4) September 23

Last Answer : December 22

The ratio of the number of boys to that of girls in a school is 3:2. If 30% of boys and 70% of girls appeared in an examination, the ratio of students appeared in the examinations to that not appeared in the examination is A) 23:27 B) 22:25 C) 21:17 D) 18:17 E) None of these

Description : The ratio of the number of boys to that of girls in a school is 3:2. If 30% of boys and 70% of girls appeared in an examination, the ratio of students appeared in the examinations to that not appeared in the examination is A) 23:27 B) 22:25 C) 21:17 D) 18:17 E) None of these 

Last Answer :  Answer: A 3:2 = 30:20 30% boys = (30/100) × 30= 9 70% girls = (70/100) × 20 = 14 (9+14) : (50-23) = 23 : 27

Window delivery ticket prepared in form a) MS 23 b) MS 22 c) MS 24 d) MS 11

Description : Window delivery ticket prepared in form a) MS 23 b) MS 22 c) MS 24 d) MS 11

Last Answer : c) MS 24

A leaf spring consists of 3 extra full length leaves and 14 graduated length leaves. The maximum force that can act on the spring is 70kN and the distance between eyes of the spring is 1.2m. Width and thickness of the leaves are 100mm and 12mm respectively. If modulus of elasticity is 207000N/mm², calculate the initial nip. (a) 26.8mm (b) 24.9mm (c) 22.5mm (d)23.1mm

Description : A leaf spring consists of 3 extra full length leaves and 14 graduated length leaves. The maximum force that can act on the spring is 70kN and the distance between eyes of the spring is 1.2m. Width and thickness of the ... /mm², calculate the initial nip. (a) 26.8mm (b) 24.9mm (c) 22.5mm (d)23.1mm

Last Answer : b) 24.9mm

A rod, 120cm long and of diameter 3.0 cm is subjected to an axial pull of 18 kN. The stress in N/mm2 is. a. 22.57 b. 23.47 c. 24.57 d. 25.47

Description : A rod, 120cm long and of diameter 3.0 cm is subjected to an axial pull of 18 kN. The stress in N/mm2 is. a. 22.57 b. 23.47 c. 24.57 d. 25.47

Last Answer : d. 25.47

On what dates of April 1994 did SUNDAYfall? (A) 2,9,16,23,30 (B) 3,10,17,24 (C) 4,11,18,25 (D) 1,8,15,22,29

Description : On what dates of April 1994 did SUNDAYfall? (A) 2,9,16,23,30 (B) 3,10,17,24 (C) 4,11,18,25 (D) 1,8,15,22,29

Last Answer : Answer: B Solution:. Let us find the day on 1st April, 1994. 2000 years have 0 odd day. We have to calculate day on 1st April, 1994. 2000-1994 = 6 Years. 1996 is leap year and have 4 odd days Ordinary years ... was Friday Thus, on 3 rd , 10 th , 17 th , 24 th will be Sunday fall on April 1994.

'Dishonestly' has been defined as doing anything with intention to cause wrongful gain to one person & wrongful loss to another, under (a) section 21 (b) section 23 (c) section 24 (d) section 25.

Description : 'Dishonestly' has been defined as doing anything with intention to cause wrongful  gain to one person & wrongful loss to another, under (a) section 21 (b) section 23 (c) section 24 (d) section 25.

Last Answer : (c) section 24

Harish buys petrol at rs 21, Rs.24 and Rs.27 per litre for 3 successive years. What approximately is the average cost per litre of petrol if he spends Rs.12000 each year? A) 23.74 B) 54.76 C) 24.66 D) 28.99

Description : Harish buys petrol at rs 21, Rs.24 and Rs.27 per litre for 3 successive years. What approximately is the average cost per litre of petrol if he spends Rs.12000 each year? A) 23.74 B) 54.76 C) 24.66 D) 28.99

Last Answer : A)  Total quantity of petrol consumed in 3 yr = (12000/21 +12000/24+12000/27) =12000(1/2 + 1/24 + 1/27) =12000(72+63+56/1512) =12000(191/1512) =(2292000/1512)litres Total amount spent = rs(3 *12000) = Rs.36000 Average cost = Rs(36000*1512/2292000) =Rs.23.74

What four numbers are between 0.22 and 0.23?

Description : What four numbers are between 0.22 and 0.23?

Last Answer : 0.2220.2240.2260.228and many others0.2200001 as example

Who on earth is that gorgeous woman in this video @0:08, 1:02, 2:13, 2:21, 3:22 and 3:24 ?

Description : Who on earth is that gorgeous woman in this video @0:08, 1:02, 2:13, 2:21, 3:22 and 3:24 ?

Last Answer : I have no idea, but I LOVE her hair!

What kind of music do you like -What is the relative frequency of students who like POP music. Leave your answer as a decimal and round to the hundredths place. 24 people like pop music 10 people like dance 22 people like hip-hop / rap 21.?

Description : What kind of music do you like -What is the relative frequency of students who like POP music. Leave your answer as a decimal and round to the hundredths place. 24 people like pop music 10 people like dance 22 people like hip-hop / rap 21.?

Last Answer : I like hiphop music and i would probably say something like 70% of people like pop

The average age of four boys, five years ago was 9 of all the five is 15 years. The present age of the new boy is 1. 22 years 2. 24 years 3. 21 years 4. 18 years 5. 19 years

Description : The average age of four boys, five years ago was 9 of all the five is 15 years. The present age of the new boy is 1. 22 years 2. 24 years 3. 21 years 4. 18 years 5. 19 years

Last Answer : 5; Five years ago the average age of 4 boys = 9 years The present average age of 4 boys = 9+5 = 14 So the present age of new boys = 15 + 4 x 1 = 19 years

How do you write 21 as a product of prime numbers?

Description : How do you write 21 as a product of prime numbers?

Last Answer : It is 3 time 7 = 21

Given are the scores (out of 25) of 9 students in a Monday test : 14, 25, 17, 22, 20, 19, 10, 8 and 23 -Maths 9th

Description : Given are the scores (out of 25) of 9 students in a Monday test : 14, 25, 17, 22, 20, 19, 10, 8 and 23 -Maths 9th

Last Answer : Ascending orders of scores is : 8, 10, 14, 17, 19, 20, 22, 23, 25 Now, new score = 8 + 10 + 14 + 17 + 19 + 20 + 22 + 23 + 25 / 9 = 158 / 9 = 17.5 marks Median = (n + 1 / 2)th observation because n is odd = (9 + 1 / 2)th observation = 5th observation = 19 marks.

Given are the scores (out of 25) of 9 students in a Monday test : 14, 25, 17, 22, 20, 19, 10, 8 and 23 -Maths 9th

Description : Given are the scores (out of 25) of 9 students in a Monday test : 14, 25, 17, 22, 20, 19, 10, 8 and 23 -Maths 9th

Last Answer : Ascending orders of scores is : 8, 10, 14, 17, 19, 20, 22, 23, 25 Now, new score = 8 + 10 + 14 + 17 + 19 + 20 + 22 + 23 + 25 / 9 = 158 / 9 = 17.5 marks Median = (n + 1 / 2)th observation because n is odd = (9 + 1 / 2)th observation = 5th observation = 19 marks.

Number of amino acids present in the dietary proteins: (A) 22 (B) 23 (C) 20 (D) 19

Description : Number of amino acids present in the dietary proteins: (A) 22 (B) 23 (C) 20 (D) 19

Last Answer : Answer : C

A soil has a bulk density of 22 kN/m3 and water content 10 %. The dry density of soil is (A) 18.6 kN/m3 (B) 20.0 kN/m3 (C) 22.0 kN/m3 (D) 23.2 kN/m3 Answer: Option

Description : A soil has a bulk density of 22 kN/m3 and water content 10 %. The dry density of soil is (A) 18.6 kN/m3 (B) 20.0 kN/m3 (C) 22.0 kN/m3 (D) 23.2 kN/m3

Last Answer : (B) 20.0 kN/m3

What port does Telnet use? a. 22 b. 80 c. 20 d. 23

Description : What port does Telnet use? a. 22 b. 80 c. 20 d. 23

Last Answer : d. 23

A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Description : A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Last Answer : Katie earned 84,92,84,75 and 70 on her first 5 tests. What is the minimum grade Katie needs to earn on the next test to have a mean of 84?

Protein content in buffalo colostrum a 20 b 20.5 c 21.4 d 23.6

Description : Protein content in buffalo colostrum a 20 b 20.5 c 21.4 d 23.6

Last Answer : c 21.4

Let the page fault service time be 10 millisecond(ms) in a computer with average memory access time being 20 nanosecond(ns). If one page fault is generated for every 106 memory accesses, what is the effective access time for memory? (A) 21 ns (B) 23 ns (C) 30 ns (D) 35 ns

Description : Let the page fault service time be 10 millisecond(ms) in a computer with average memory access time being 20 nanosecond(ns). If one page fault is generated for every 106 memory accesses, what is the effective access time for memory? (A) 21 ns (B) 23 ns (C) 30 ns (D) 35 ns

Last Answer : (C) 30 ns

The sum of 5 natural numbers A, B, C, D, E is 126. It is known that A:B = 7:8, B:C = 2:3, C:D = 4:5, D:E = 5:7.What is the difference between A and E? a) 14 b) 22 c) 24 d) 28 e) 32

Description : The sum of 5 natural numbers A, B, C, D, E is 126. It is known that A:B = 7:8, B:C = 2:3, C:D = 4:5, D:E = 5:7.What is the difference between A and E? a) 14 b) 22 c) 24 d) 28 e) 32

Last Answer : A:B = 7:8 B:C = 2:3 = 8:12 SO, A:B:C = 7:8:12 C:D = 4:5 = 12:15 A:B:C:D = 7:8:12:15 D:E = 5:7 = 15:21 SO, A:B:C:D:E = 7:8:12:15:21 given x(7+8+12+15+21) = 126 or 63x = 126 or x =2 E – A = 21X – 7X = 14X = 28 Answer: d)

An old fashioned bike wheel has 21 spokes. How many spaces are between the spokes - 20, 21, or 22? -Riddles

Description : An old fashioned bike wheel has 21 spokes. How many spaces are between the spokes - 20, 21, or 22? -Riddles

Last Answer : 21

The serum estradiol level in women during 21–30 days of menstrual cycle is (A) 10-20 pg/ml (B) 22-66 pg/ml (C) 73-149 pg/ml (D) 1000 pg/ml

Description : The serum estradiol level in women during 21–30 days of menstrual cycle is (A) 10-20 pg/ml (B) 22-66 pg/ml (C) 73-149 pg/ml (D) 1000 pg/ml

Last Answer : Answer : C

Due to the party politics Muhammad Bin Qasim died at the age of: A. 19 B. 20 C. 21 D. 22

Description : Due to the party politics Muhammad Bin Qasim died at the age of: A. 19 B. 20 C. 21 D. 22

Last Answer : ANSWER: B

When a Proclamation of Emergency is in operation, the right to move a Court for the enforcement of all Fundamental Rights remains suspended, except - (1) Article 20 and Article 21 (2) Article 21 and Article 22 (3) Article 19 and Article 20 (4) Article 25 and Article 16

Description : When a Proclamation of Emergency is in operation, the right to move a Court for the enforcement of all Fundamental Rights remains suspended, except - (1) Article 20 and Article 21 (2) Article 21 and Article 22 (3) Article 19 and Article 20 (4) Article 25 and Article 16

Last Answer : (1) Article 20 and Article 21 Explanation: Indian constitution Article 359 of the Constitution authorizes the President of India to suspend the right to move any court for the enforcement of Fundamental Rights during National Emergency except Article 20 and Article 21.

Which of the following Articles cannot be suspended during the national emergency? (1) Articles 14 and 15 (2) Articles 19 and 20 (3) Articles 21 and 22 (4) Articles 20 and 21

Description : Which of the following Articles cannot be suspended during the national emergency? (1) Articles 14 and 15 (2) Articles 19 and 20 (3) Articles 21 and 22 (4) Articles 20 and 21

Last Answer : (4) Articles 20 and 21 Explanation: Article 20 and 21 cannot be suspended during national emergency.

Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots. A 21 rad/sec B 25.62 rad/sec C 20.22 Hz D 3.15 Hz

Description : Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots. A 21 rad/sec B 25.62 rad/sec C 20.22 Hz D 3.15 Hz

Last Answer : B 25.62 rad/sec

Indian constitution provides protection to the life and liberty of citizens as well as non citizens by a) Art. 20 b) Art. 21 c) Art. 22 d) Art. 19

Description : Indian constitution provides protection to the life and liberty of citizens as well as non citizens by a) Art. 20 b) Art. 21 c) Art. 22 d) Art. 19

Last Answer : b) Art. 21