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A father takes 8 children 3 at a tim...

A father takes 8 children 3 at a time to the zoo , as often as he can take without the same three together more than once . If the number of times each children can go is x and the number of times he can go is y , then (x,y)=

A

`(21,53)`

B

`(20,56)`

C

`(20 ,53)`

D

`(21,56)`

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
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