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CAT 1998 — QA Question 2

Even OddEasy

n3 is odd. Which of the following statement(s) is(are) true?

I. n is odd.
II. n2 is odd.
III. n2 is even.

Answer & solution

  • A

    I only

  • B

    II only

  • I and II

  • D

    I and III

Solution

If n3 is odd, then n should also be odd. Hence, n2 should also be odd, not even. So only I and II are true.

CAT 1998 QA Q2: n 3 is odd. Which of the following statement(s) is(are) true? I. n is odd. II. n 2 is odd. III. n 2 is even. — Solution | TheCATExam