Question

Find the Greatest Number - 3 ROOT 2, 3 ROOT 7, 6 ROOT 5, 3 ROOT 20
Find the greatest number among the following : 3 ROOT 2, 3 ROOT 7, 6 ROOT 5, 3 ROOT 20.

Answer 1

The greatest number is 3√20.

Answer 2

We need to find the greatest among 3√2, 3√7, 6√5, 3√20.

To solve this, lets get all the number within the square root sign.

3√2    = √2 x 3 x 3    = √18
3√7    = √7 x 3 x 3    = √63
6√5    = √5 x 6 x 6    = √180
3√20  = √20 x 3 x 3  = √180

We see that both 6√5 and 3√20 are equal and greater than the others. So in this question, we will have two answers: 6√5 and 3√20