Evaluate: $$ {9।3-5।-5।-5।4।÷10\over-3(5)-2×4÷2}$$

The sum of the squares of 2 number is 146 and the square root of one of them is 5. The cube of the other number is 

The largest number of five digits, which is a perfect square is 

Simplify : $$ {(2x)^{2}-(2y)^{2}-(4x)^{2}}$$

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

By what least number should 4320 be multiplied so as to obtain a number which is perfect cube? 

Simplify : $$ {5\over3}×{7\over51}\ of \ {17\over5}-{1\over3}\over {2\over9}×{5\over7}\ of \ {28\over5}-{2\over3}  $$

In a group of 15 women, 7 have nose studs, 8 have ear rings and 3 have neither. How many of these have both nose studs and ear rings?