Multiple choice

If p, q, r, s and t are integers, the expression p2{q3(r - s) + t} will be an even number whenever ____ is even.

  1. p

  2. q

  3. r

  4. s

  5. t
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The expression is of the form p2X. So, whenever p is even, the product will be even, irrespective of whether the second number X is odd or even. So, (1) is the answer.

Keep practicing — related questions