Quantitative Aptitude - Arithmetic Ability Questions

A man, rowing a boat, covers a distance of 16 km in two hours downstream. He covers half the distance in same amount of time when rowing upstream. Calculate the speed of the stream.

What is the value of (cos30° + 1/2) ?

In a class when a test is conducted, mean of 25 students marks is 60 if mean of first 13 students marks is 70 and mean of last 13 students marks is 50 find the marks of the middle student when arranged in the ascending order.

Which of the following equations has 3 as a root?

If cos(A-B) - cos(A+B) = x, then the value of x is

Convert decimal 99 to binary.

If the volume of a cylinder is 385 cubic cm and height is 10 cm, find its radius?

When a number is divided by 56, the remainder will be 29. If the same number is divided by 8, then the remainder will be