NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - Encircle Odd Ones
Question 30

Question.  30

(a) (–1) × (–1)

(b) (–1) × (–1) × (–1)

(c) (–1) × (–1) × (–1) × (–1)

(d) (–1) × (–1) × (–1) × (–1) × (–1)

(a)

(–1) × (–1)

(b)

(–1) × (–1) × (–1)

(c)

(–1) × (–1) × (–1) × (–1)

(d)

(–1) × (–1) × (–1) × (–1) × (–1)

Detailed Answer with Explanation:

(a)=+1, (c)=+1, (d)=–1, (b)=–1. Since most are positive, (b) is the odd one.

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