Eighteen quests have to be seated, half on each side of a long table. Four particular guests desire to sit on one particular side and -Maths 9th

1 Answer

Answer :

Since four particular guests want to sit on particular side and three others on the other side. So, we are left with 11 guests out of which we choose 5 for side A in  ways and remaining 6 for other side in  ways. Hence, the number of selection for two sides is . Now 9 persons on each side of the table can be arranged among themselves in 9! Ways. Hence, the total number of arrangements =

Related questions

Description : There are 10 persons who are to be seated around a circular table. Find the probability that two particular persons will always sit together. -Maths 9th

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Description : There are two concentric hexagons. Each of the side of both the hexagons are parallel. -Maths 9th

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Description : Find the area of regular octagon with each side ‘a’ cm. -Maths 9th

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Description : The base of a right triangular prism is an equilateral triangle. If the height is halved and each side of the base is doubled, find the ratio of the -Maths 9th

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Description : Find the number of ways in which 10 different flowers can be strung to form a garland so that three particular flowers are always together -Maths 9th

Last Answer : Consider the three particular flowers as one flower. Then we have (10 – 3) + 1 = 8 flowers which can be strung in the garland. Thus the garland can be formed in (8 – 1)!, i.e., 7! ways But the 3 particular flowers can be arranged amongst themselves in 3!

Description : In how many ways can a committee of five persons be formed out of 8 members when a particular member is taken every time? -Maths 9th

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