What will be units value of `191*191*252-211*566*114` ?

1. Find the value of 2.52/ 1.2

A boy throws a ball with speed u in a well of depth 14 m as shown in (Fig. 5.191). On bounce with the bottom of the well, the speed of the ball gets halved. What should be the minimum value of u( "in" ms^-1) such that the ball may be able to reach his hands again ? It is given that his hands are at 1 m height from top of the well while throwing and catching. .

If in a system unit of mass is 5kg, unit of length is 10m and unit of time as 5sec, then what will be the value of 1 unit energy in new system.

What will be the average of the following set of scores? 313,252,161,727,525,818

The numeral in the units position of 211^(870)+146^(127)xx3^(424) is

The aproximate value of square root of 25.2 is