Consider the following in respect of prime number p and composite number c. 1. \frac{p + c}{p−c} can be even. 2. 2p + c can be odd. 3. pc can be odd. Which of the statements given above are correct?

UPSC Civil Services 2023 Prelims General Studies Paper II

Question : 15 of 80

Marks: +1, -0

Consider the following in respect of prime number p and composite number c.
1. ‌

p‌+‌c

p−c

can be even.
2. 2p + c can be odd.
3. pc can be odd.
Which of the statements given above are correct?

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