Quantitative Aptitude - Arithmetic Ability Questions

If 13x2 = 172 - 92, find the value of x?

Select the odd number from the given alternatives.

What is the angle between the two hands of a clock when the time shown by the clock is 8 p.m.?(in degrees)

D and E are points on the sides AB and AC respectively of ΔABC such that DE is parallel to BC and AD:DB = 4:5, CD and BE intersect each other at F. Then the ratio of the areas of ΔDEF and ΔCBF

Two numbers are 40% and 80% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

The mean deviation of the data 3, 10, 10, 4, 7, 10, 5 is :

In the figure, a circle touches quadrilateral ABCD. If AB = 2x + 3, BC = 3x - 1, CD = x + 6 and DA = x + 4, then what is the value of x?

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