Quantitative Aptitude - Arithmetic Ability Questions

Simplify : 213 - 112 of 35 + 125 ÷ 213

(0.2 x 0.2 x 0.2)(0.06 x 0.06 x 0.06) / (0.12 x 0.12 x 0.12) = ?

The order of rotational symmetry of a trapezium is

A water tank has two holes. The 1st hole alone makes the tank empty in 3 min and 2nd hole alone makes the tank empty in 5 min. If water leaks out at a constant rate, how long in minutes does it take if both the holes together empty the tank?

How many of the factors of 256 are perfect squares?

A boat goes 15 km upstream and 10 1/2 km down stream in 3 hrs 15 min. It goes 12 km upstream and 14 km downstream in 3 hrs. What is the speed of the boat in still water?

An angle is 1/3 its supplementary angle. Find the measure of the angle?

What is the sum of the first 12 terms of an arithmetic progression if the first term is -19 and last term is 36?