The least number that is divisible by all the numbers from 1 to 5 is:
(a) 70
(b) 60
(c) 80
(d) 90

1 Answer

Answer :

(b) 60

Related questions

Description : If the arithmetic mean of 150 numbers is calculated 70. If each number is increased by 10, then mean of new number is. A) 70 B) 80 C) 90 D) 60

Last Answer : B) Arithmetic mean of numbers = 70 Sum of 150 numbers = (70 * 150) =10500 Total increase = (150 * 10) = 1500 Increased sum = 10500 + 1500 = 12000 Increased average = 12000/150 =80

Description : n2 – 1 is divisible by 8, if n is (a) an integer (b) a natural number (c) an odd integer (d) an even integer

Last Answer : (c) an odd integer

Description : Octane number of petrol normally used in petrol engines is of the order of a. 20-30 b. 40-60 c. 60-70 d. 80-90

Last Answer : ANSWER d. 80-90

Description : Octane number (unleaded) of reformed gasoline may be upto (A) 60 (B) 70 (C) 80 (D) 90

Last Answer : (D) 90

Description : The number of heart beats on an average in an adult human is in the range of (1) 60-65 (2) 66-70 (3) 71-80 (4) 85-90

Last Answer : 71-80

Description : The incomes of A and B are in the ratio 1 : 2 and their expenditures are in the ratio 2 : 5. If A saves Rs 20,000 and B saves Rs 35,000, what is the total income of A and B? A) Rs 30,000 B) Rs 70,000 C) Rs 90,000 D) Rs 60,000 E) Rs 80,000

Last Answer : Answer: C Income of A = x, of B = 2x Expenditure of A = 2y, of B = 5y Savings is (income – expenditure). So x – 2y = 20,000 2x – 5y = 35,000 Solve the equations, x = 30,000 So total = x+2x = 3x = 3*30,000 = 90,000

Description : In plain sedimentation tanks under normal conditions, impurities are removed upto  (A) 60 %  (B) 70 %  (C) 80 %  (D) 90 %

Last Answer : (B) 70 % 

Description : amount of liquid that a man can spray in a day is: A. 60 litres liquid B. 70 litres liquid C. 80 litres liquid D. 90 litres liquid

Last Answer : 90 litres liquid

Description : Standerd disc plough consist of steel dics of… to……. CM diameter. a. 60,90 c) 60,80 b. 70,100. d) 70,90

Last Answer : 60,90

Description : Calculate the prime cost from the following information: Direct material purchased: Rs. 1,00,000 Direct material consumed: Rs. 90,000 Direct labour: Rs. 60,000 Direct expenses: Rs. 20,000 Manufacturing overheads: Rs. 30,000 (a) Rs. 1,80,000 (b) Rs. 2,00,000 (c) Rs. 1,70,000 (d) Rs. 2,10,000

Last Answer : (c) Rs. 1,70,000

Description : To dry fruits out-of-doors, humidity below ____ percent is best. a. 60 c. 80 b. 70 d. 90

Last Answer : a. 60

Description : Out of 5 women and 4 men, a committee of three members is to be formed in such a way that at least one member is woman. In how many different ways can this be done? 1) 60 2) 100 3) 120 4) 90 5) 80

Last Answer : 5) 80

Description : If a number x is chosen at random from the numbers -2, -1, 0 1, 2. What is the probability that x 2 < 2? a. 2/5 b. 3/5 c. 1/4 d. 4/7

Last Answer : b. 3/5

Description : If m and n are two odd prime numbers such that m (a) an even number (b) an odd number (c) an odd prime number (d) a prime number

Last Answer : (a) an even number

Description : A number is selected at random from first 50 natural numbers. Find the probability that it is a multiple of 3 and 4. a. 3/25 b. 2/25 c. 1/25 d. 13/50

Last Answer : b. 2/25

Description : What's the least number of straight lines across America do you need to intersect every state?

Last Answer : You need just one. Just place some black holes at the appropriate positions. They will warp spacetime, so from an outside reference frame, the line will have curves, but from the reference frame of ... around it will intersect every state, and depending on the angle, even every point on the map.

Description : What is the average of 75 70 80 80 85 90?

Last Answer : 8075 + 70 + 80 = 22580 + 85 + 90 = 255225 + 255 = 480six numbers so 480 / 6 = 80

Description : In the total proteins, the percentage of albumin is about (A) 20–40 (B) 30–45 (C) 50–70 (D) 80–90

Last Answer : Answer : C

Description : . In order to be called steel, an alloy should have iron percentage greater than (A) 80 (B) 70 (C) 90 (D) 50

Last Answer : (A) 80

Description : A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height. (A) 10-15 (B) 30-40 (C) 70-80 (D) 90-100

Last Answer : (A) 10-15

Description : Percentage of water in buffalo milk is:- a. 65-67 % b. 70-75 % c. 80-85 % d. 87-90 %

Last Answer : d. 87-90 %

Description : Area of steel required per metre width of pavement for a length of 20 m for design wheel load 6300 kg and permissible stress in steel 1400 kg/cm2 , is (A) 70 kg/sq cm (B) 80 kg/sq cm (C) 90 kg/sq cm (D) 100 kg/sq cm

Last Answer : Answer: Option C

Description : The minimum width of a septic tank is taken (A) 70 cm (B) 75 cm (C) 80 cm (D) 90 c

Last Answer : (B) 75 cm

Description : Goods not belonging to 100% EOU, EHTP, STP can be stored up to _____ days before being cleared for home consumption without attracting any interest. A 90 B 80 C 70 D 20

Last Answer : Ans :90

Description : For how many days NREGA provides employment? (a) 70 days (b) 80 days © 90 days (d) 100 days

Last Answer : (d) 100 days

Description : Milling a hundred pounds of wheat should yield ____ percent straight flour. a. 72 to 75 c. 88 to 90 b. 75 to 80 d. 68 to 70

Last Answer : a. 72 to 75

Description : The speed of light through a single-mode optical fiber is approximately: w) c (equal to 3 x 108 m/s) x) 70 percent of c y) 80 percent of c z) 90 percent of c

Last Answer : ANSWER: X -- 70 PERCENT OF c

Description : Now it was Ravi‘s turn. He rolled the dice. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is greater than 8? a. 1 b. 5/36 c. 1/18 d. 5/18

Last Answer : d. 5/18

Description : Rahul got next chance. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is equal to 7? a. 5/9 b. 5/36 c. 1/6 d. 0

Last Answer : c. 1/6

Description : Now it was Ravi‘s turn. He rolled the dice. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is less than or equal to 12? a. 1 b. 5/36 c. 1/18 d. 0

Last Answer : a. 1

Description : Rahul got next chance. What is the probability that he got the sum of the two numbers appearing on the top face of the dice is 13? a. 1 b. 5/36 c. 1/18 d. 0

Last Answer : d. 0

Description : In a family of 3 children, probability of having at least one boy is: a. 7/8 b. 1/8 c. 5/8 d. 3/8

Last Answer : a. 7/8

Description : From 5 different green balls, four different blue balls and three different red balls, how many combinations of balls can be chosen taking at least one green and one blue ball?

Last Answer : Answer: 3720.

Description : Given that sin A=1/2 and cos B=1/√2 then the value of (A + B) is: (a)30 (b)45 (c)75 (d)60

Last Answer : (c)75

Description : If cos 2α = 1⁄2 ,then α is a 15 0 b 30 0 c 60 0 d 0 0

Last Answer : b 30 0

Description : If the number of lanes on the carriageway of a road is more than two, the total width of lane ways is equal to 3.0 m (A) + 0.60 m (B) + 0.70 m (C) + 0.90 m (D) + 1.50 m

Last Answer : Answer: Option B

Description : If somebody choose two digit and three digit numbers and their difference is 989.What will be their sum? a) 1000 b)1010 c) 1006?

Last Answer : None of the above. Let x be the three digit number and y be the two digit number. x - y =989. x = 989 + y. x is obviously greater than 989 and less than 1000 (since it is three digits). Since y is a two digit number ... 989 + 10 = 999. We can't go any higher, so x =999 and y=10. x+y = 999+10 = 1009

Description : To the nearest 10%, what percentage of all numbers contain a 9?

Last Answer : You probably need to clarify that you mean what percentage of the set of all integers contains the digit 9'? Because there are an infinite number of numbers that don't contain that digit (and ... is also an infinite set of digits that does not. Maybe you need to restrict your range some more.

Description : Is the previous result of lotteries useful for predicting the numbers of a lottery ticket?

Last Answer : No. Every time is random.

Description : If 4! = 1x2x3x4 and is called 4 factorial, what is the sum of the numbers e.g. 4(?)= (1+2+3+4) called?

Last Answer : What’s wrong with the summation notation? It does just that. I don’t think there’s any other way of expressing it other than writing it out. [addition]: After more research, I found a formula where 1+2+3+4….+n= n*(n+1)/2 http://en.wikipedia.org/wiki/Triangular_number

Description : What's the longest known sequence of non-prime numbers?

Last Answer : My guess would be that such sequences grow in length with as number size gets larger. Prime numbers become increasing scarce as numbers get larger, making it more likely to find long sequences of primes.

Description : Brain Teaser - Indivisibility properties of sequence of numbers?

Last Answer : Mmmm homework =)

Description : Brain Teaser - Working with numbers that don't divide into one another?

Last Answer : 1) Write all of those numbers in the form: 2^k * m where m is an odd integer and k is a non-negative integer. Obviously m < 50. Since we have 25 odd numbers less than 50 if we pick 26 numbers between 1 and ... and hence n is at least 3 m. Hence k is larger than l. For (3) I should think a bit more.

Description : H.C.F of two prime numbers is (a) 1 (b) 0 (c) 3 (d) 2

Last Answer : (a) 1

Description : The sum or difference of of two irrational numbers is always (a) rational (b) irrational (c) rational or irrational (d) not determined

Last Answer : (b) irrational

Description : The sum of two irrational numbers is always (a) irrational (b) rational (c) rational or irrational (d) one

Last Answer : (a) irrational

Description : The product of two different irrational numbers is always (a) rational (b) irrational (c) both of above (d) none of above

Last Answer : (b) irrational

Description : Two dice are thrown together. Find the probability that the sum of the numbers obtained is even a. 1/4 b. 1/6 c. 1/3 d. 1/2

Last Answer : d. 1/2

Description : How are the British names for large numbers different from the American names?

Last Answer : 1,000,000,000 = billion in America, thousand million in England. 1,000,000,000,000 = trillion in America, billion in England. 1,000,000,000,000,000 = quadrillion in America, thousand billion in England. 1,000,000,000,000,000,000 = quintillion in America, trillion in England.

Description : Chapter 1 Real Numbers

Last Answer : Chapter 1 Real Numbers