Mathematics - Permutation & Combination Question with Solution | TestHub
MathematicsPermutation & CombinationnPr & nCrHard2 minPYQ_2006
MathematicsHardsingle choice
If are prime numbers and are the positive integers such that LCM of is , then the number of ordered pairs is
Options:
Answer:
C
Solution:
Since, are prime numbers.
Selection of and are as under
Total number of ways to select .
Similarly, the number of ways to select .
Total number of ways .
Stream:JEE_ADVSubject:MathematicsTopic:Permutation & CombinationSubtopic:nPr & nCr
⏱ 2mℹ️ Source: PYQ_2006
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