TS ICET 2017 Question Paper with Solutions for online practice

Question : 113 of 200

Marks: +1, -0

Let n(S) denote the number of elements in a finite set S and let

S_p

denote the set of all positive divisors of p. Then n (S_18 ∩ S_24)

Solution:

S_18:\{1,2,3,6,9,18\}

S_24:\{1,2,3,4,6,8,24\}

S_18∩S_24:\{1,2,3,6\}

∴n(S_18∩S_24)=4

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