Quantitative Aptitude - Arithmetic Ability Questions

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

Consider two-digit numbers which remain the same when the digits interchange their positions. What is the average of such two-digit numbers?

Consider the circle shown below having angle AOB as 135 deg and the shaded portion is the x part of the circular region. Calculate the value of x.

If the angles of a triangle are in the ratio of 2 : 3 : 7, then find the ratio of the greatest angle to the smallest angle.

Find the odd word/letters/number from the given alternatives.

Two pipes, when working one at a time can fill a cistern in 2 hrs and 3 hrs, respectively while a third pipe can drain the cistern empty in 6 hrs. All the three pipes were opened together when the cistern was 1/6 full. How long will it take for the cistern to be completely full?

In an isosceles triangle ABC, AB = AC and ∠A = 80°. The bisector of ∠B and ∠C meet at D. The ∠BDC is equal to

If the side of the equilateral triangle is 8√3 cm, then what is the length (in cm) of the in radius of the triangle?