Consider two statements S1 and S2 followed by a question:

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S1: p and q both are prime numbers.

S2: p + q is an odd integer.

Question: Is pq an odd integer?

Which one of the following is correct ?

[Paper II (CSAT) Analysis 2019]

A S1 alone is sufficient to answer the question

B S2 alone is sufficient to answer the question

C Both S1 and S2 taken together are not sufficient to answer the question

D Both S1 and S2 are necessary to answer the question

Answer is (d). Consider following rules - 1. odd × odd = odd;&n...

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