Arithmetic Ability
Permutations and Combinations

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Q.

In how many ways can 100 soldiers be divided into 4 squads of 10, 20, 30, 40 respectively?

View Answer

Correct choice: D

Explanation:

100C10 + 90C20 + 70C30 + 40C40 = 100!/10!x20!x30!x40!
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