Quantitative Aptitude - Arithmetic Ability Questions

If x + (1/x) = 2, then what is the value of x64 + x121?

Rs 18200 is divided among X, Y and Z in the ratio of 1/3 : 1/4 : 1/2. What is the share (in Rs) of X ?

If πsinθ= 1, πcosθ= 1, then (3tan 23θ+1) is

If the radius of a circle is increased by 21%, then its area will increase by what percent?

The diameter of a circle is equal to the side of the square. What is the area of the square if the area of the circle is 64π sq cm?

What is the unit digit of 15+25+35+...+205 ?

Find the unit place digit in 71 x 72 x 73 x 74 x 76 x 77 x 78 x 79.

The average age of A and B is 18 years. After 3 years, C joins them and the average ages of A, B and C becomes 22 years. The age of C is ?