NCERT Exemplar · Class 8 · Maths

Chapter 3: Squares and Square Roots & Cubes and Cube Roots

Practice each question, then open the answer or worked solution.

Questions

142 questions

Q141Written answer

A three digit perfect square is such that if it is viewed upside down, the number seen is also a perfect square. What is the number?

(Hint: The digits 1, 0 and 8 stay the same when viewed upside down, whereas 9 becomes 6 and 6 becomes 9.)

Show solutionHide solution

Worked solution

Solution:-

A three digit perfect square is such that if it is viewed upside down are 196 and 961.

Q142Written answer

13 and 31 is a strange pair of numbers such that their squares 169 and 961 are also mirror images of each other. Can you find two other such pairs?

Show solutionHide solution

Worked solution

Solution:-

First pair is 12 and 21

Squares of numbers, 12² = 144 and 21² = 441

Second pair is 102 and 201

Squares of numbers, 102² = 10404 and 201² = 40401

My Cart

Your Cart 0

Chapter 3: Squares and Square Roots & Cubes and Cube Roots

Questions