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The number of positive integral solution...

The number of positive integral solutions of the equation xyz = 30 is

A

24

B

25

C

26

D

27

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The correct Answer is:
D
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NEW JOYTHI PUBLICATION-PERMUTATIONS AND COMBINATIONS-EXERCISE
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  9. ""^(15)C(0)=

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  11. If m=""^(n)C(2),"then """^(m)C(2)=

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