Quantitative Aptitude - Arithmetic Ability Questions

What are the components of X6 - X4 - X5 - X4 + X2 - 4?

If X + 2Y = 27 and X - 2Y = -1, find the value of Y.

The value of Sin 60 is

From the top of a platform 7 m high, the angle of elevation of a tower was 30 deg. If the platform was positioned 50√3 m away from the tower, how tall was the tower?

Out of a group of three numbers, second is thrice of the first and also twice of the third. If the sum of the three numbers is 55 then find the largest number in the group.

The diagonals of 2 squares M and N are in the ratio 2:1. The ratio of their areas is

How many spherical balls of radius 1 cm can be made by melting a hemisphere of radius 6 cm?

The square of 11111 is