NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 1: Number System - True or False QuestionsQuestion 96
Class 7 - Mathematics - Unit 1: Number System - True or False Questions
Question. 96
\(99\times101\) can be written as \((100-1)\times(100+1)\).
Answer:
true
Detailed Answer with Explanation:
Algebraic identity: \((a-1)(a+1)=a^2-1\) with \(a=100\) gives \(100^2-1=99\times101\).