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Seven different coins are to be divided ...

Seven different coins are to be divided amongst three persons. If no two of the persons receive thesame number of coins but each receives atleast one coin & none is left over, then the number of waysin which the division may be made is

A

420

B

630

C

710

D

none

Text Solution

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The correct Answer is:
B
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MOTION-THEORY AND EXERCISE BOOK-EXERCISE - 4 (LEVEL -II)
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  12. Let a(n) denote the number of all n-digit numbers formed by the digits...

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