1.

If `P_(n)` is the set of first n prime numbers, then `underset(n=3)overset(10)capP_(n)` isA. {3,5,7,11,13,17,19}B. {2,3,5}C. {2,3,5,7,11,13,17}D. {3,5,7}

Answer» Correct Answer - B
(i) Recall the definition of intersection of sets and subsets.
(ii) If `AsubB`, then `AcapB=A`.
(iii) `underset(n=1)overset(10)(cap)P_(n)=p_(3)capp_(4)cap. . . .capp_(10)=p_(3)`.


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