In a garden of 42 trees, 3/7 of them are Neem trees and the rest are Mango trees. Find the number of Mango trees.

$$ { \sqrt{(0.798)^2+0.404×0.798+(0.202)^2}+1=?} $$

The value of $${4- \sqrt{0.04} \over 4+\sqrt{0.4} } $$  is closed to

Simplify : $$ {(7) ^{2} ÷(7^{1\over 2})^{4}}$$

Assume that
$$\sqrt{3} = 3.605 \ (approximately)  $$
$$\sqrt{130} = 11.40 \ (approximately)  $$
Find the value of
$$\sqrt{1.3} + \sqrt{1300}+\sqrt{0.013}  $$

The smallest natural number, by which 3000 must be divided to make the quotient a perfect cube, is : 

The square root of a positive number less than 100 lies between

The value of $$ {\sqrt{0.6912}+{\sqrt{0.5292}}\over {\sqrt{0.6912}-{\sqrt{0.5292}}}}$$ is: