Quantitative Aptitude - Arithmetic Ability Questions

Which of the following equations has the sum of its roots as 11?

Select the odd word/letters/number/number pair from the given alternatives.

If the Arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is

If -5x3+2 = x-6, then find the value of x?

Two numbers are 40% and 50% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

Which of the numbers given below is the square root of 15376?

A thief is stopped by a policeman from a distance of 200 metres. When the policeman starts the chase, the thief also starts running. Assuming the speed
of the thief as 8 km/hr and that of police man as 10 km/hr. How far the thief would have run, before he is over ­taken?

In ∆ABC, ∡A + ∡B = 75 and ∡B + ∡C = 140, then ∡B =