Quantitative Aptitude - Arithmetic Ability Questions

If the average of 31, x, 42, 39, 56, 78, 83 and 91 is 58.5, then what is the value of x?

The maximum gap between two successive leap year is?

Select the figure that does not belong in the following group.

The area of an equilateral triangle is 16√3 sq.cm. Find its side in cm.

A, B, C hired a car for Rs. 520 and used it for 7, 8 and 11 hours respectively. Hire charges paid by B were :

What will come in place of the question mark in the series below?

2, 17, 89, 359, 1079, ?

30% of a number is 33. What is the number?

If p : q : r = 2 : 3 : 5, then what will be the ratio of (p + q + r) : (3p + q – r)?