Find the smallest prime number dividing the sum 311 + 513.

Q7 of 85 Page 144

Find the smallest prime number dividing the sum 3¹¹ + 5¹³.

Given, the sum of 3¹¹ and 5¹³

We need to find out smallest prime numbers.

We know that sum of two odd numbers is even and any even number is divisible by 2.

Hence, the sum of 3¹¹ and 5¹³ is divisible by 2 which is the smallest prime number.

Find the smallest number by which 8640 must be divided so that the quotient is a perfect cube?

Ravi made a cuboid of plasticine of dimensions 12cm, 8cm and 3cm. How many minimum numbers of such cuboids will be needed to form a cube?

Find the cube root of the following numbers by prime factorization method.

343

Find the cube root of the following numbers by prime factorization method.

729

Questions · 85

6. Square Roots and Cube Roots

1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 6 6 6 1 1 1 1 2 3 4 5 6 7 8 9 1 1 1 1 1 2 2 2 2 3 4 5 6 7 8 8 8 1 1 1 1 2 2 2 2 2 3 4 5 6 7 1 1 1 1 2 2 2 2 3 3 3 3 3 3 3 4