Quantitative Aptitude - Arithmetic Ability Questions

A Lawn roller makes 20 revolutions in one hour. The radius it runs through 25 minutes is

In what time will Rs.4400 become Rs.4576 at 8% per annum interest compounded half-yearly?

Which of the following numbers is completely divisible by 99?

If Tan θ = 7/24, then what is the value of Cosec θ?

If (1 -­ cosA)/(1 + cosA) = x, then the value of x is

If x + y + z = 0, then what is the value of (3y2 + x2 + z2 )/(2y2 – xz)?

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

In the following question, select the odd word pair from the given alternatives.