Mathematics - Permutation & Combination Question with Solution | TestHub

MathematicsPermutation & CombinationFundamental PrincipleEasy2 minQB

MathematicsEasysingle choice

The number of divisors of 1029, 847 and 122 are in

Answer:

Solution:

We have $1029 = 3. 7^{3}$

It has numbered of divisors $= (1 + 1) (1 + 3) = 8$

Similarly $847 = 7.1 1^{2}$ , number of divisors $= 2.3 = 6$ and $122 = 2.61$ , number of divisors $= 2.2 = 4$

Clearly 8, 6, 4 are in A.P.

Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:Fundamental Principle

⏱ 2mℹ️ Source: QB

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