Mathematics - Permutation & Combination Question with Solution | TestHub
MathematicsPermutation & CombinationDistributionMedium2 minQB
MathematicsMediumsingle choice
Passage / Comprehension
If there are two jobs such that one of them can be completed in m ways, and when it has been completed in any one of these m ways, second job can be completed in n ways; then the two jobs in succession can be completed in m × n ways
Find the number of ways in which n distinct balls can be put into three boxes so that no two boxes remain empty.
Options:
Answer:
D
Solution:
The number of possible unsuccessful attempts is . If is the time taken by the man to unlock, then:]
Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:Distribution
⏱ 2mℹ️ Source: QB
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