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Quantitative Reasoning – Practice – Common elements of two sets!

PSA_PRACTICE_QNR7. 

PSA_PRACTICE_QNR7

Ans:

B ∈ {15, 25, 35, 45, 55, 65, 75, 85, 95}

A ∈ {2, 3, 5, 7, 11, 13…}

There will be no common element between A and B because set A will not have any number that will  have ‘5’ as its unit’s digit other than ‘5’ itself. Any positive integer greater than 5 that has unit’s place occupied by ‘5’ is not a PRIME number. Option (A) None.

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