NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - Encircle Odd Ones
Question 27

Question. 27

Encircle the odd one of the following:

(a) (–1, –2) (b) (–5, +2) (c) (–4, +1) (d) (–9, +7)

(a)

(–1, –2)

(b)

(–5, +2)

(c)

(–4, +1)

(d)

(–9, +7)

Detailed Answer with Explanation:

(a), (b), (c) are closer pairs with smaller differences. (–9, +7) has the largest gap and does not follow the same pattern, so (d) is odd.

NCERT Exemplar Solutions Class 7 – Mathematics – Unit 1: Number System – Encircle Odd Ones | Detailed Answers