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Solution


Q.

 Let S be a set of 5 elements and P(S) denote the power set of S. Let E be an event of choosing an ordered pair (A, B) from the set P(S)×P(S) such that A∩B=∅.  If the probability of the event E is 3p2q, where p,q∈ℕ, then p+q is equal to __________ .                [2026]

Ans.

(15)