Find the value of $$ {5^{1\over2}-[3^{1\over4}+6-4÷2]}$$

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

The least number, by which 1944 must be multiplied so as to make the result a perfect cube is 

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? 

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

2x + 4y – 8xy -1 =?

The smallest number that must be subtracted from 1000 to make the resulting number a perfect square is 

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