Maths Permutations & Combination Definition of Combinations, Condition Combinations, Division into Groups, Derangements Single Correct MCQ
Published on: August 14, 2026

All possible two factors products are formed from numbers 1, 2, 3, 4, ...., 200. The number of factors out of the total obtained which are multiples of 5 is

A
5040
B
7180
C
8150
D
None of these

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Verified by Experts
The correct answer is:
B

The total number of two factor products . The number of numbers from 1 to 200 which are not multiples of 5 is 160. Therefore total number of two factor products which are not multiple of 5 is .

Hence the required number of factors

.

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