Quantitative Aptitude - Arithmetic Ability Questions

If x-1x = 10, then find the value of x4+1x2

In the following question, select the odd letter/letters from the given alternatives.

If (8 - 10x) - (13x - 2) = -9, then the value of x is

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

If the amount received at the end of 2nd and 3rd year at compound Interest on a certain Principal is Rs 9,600 and Rs 10,272 respectively, what is the rate of interest (in %)?

A spherical glass vessel has a cylindrical neck 7 cm long and 4 cm in diameter. The diameter of the spherical part is 21 cm. Find the quantity of water it can hold.

Find the number that is as much greater than 39 as is less than 79.

P does half as much work as Q in 1/3 of the time. If together they take 15 days to complete a work, how many days will P take to do it alone?