Maths : Basic Numeracy

Q 77 / 370

Let p, q, r and s be distinct positive integers. Let p, q be odd and r, s be even. Consider the following statements:

  1. (p – r)2 (qs) is even.
  2. (q – s) q2 s is even.
  3. (q + r)² (p + s) is odd.

Which of the statements given above are correct?