Quantitative Aptitude - Arithmetic Ability Questions

The average age of 19 boys in a class is 21 years. If the teacher's age is included, the average increases to 22 years. What is the teacher's age?

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

What is the third proportional to 9 and 15?

Calculate the angle subtended by the chord at the point on the major arc if the radius and the chord of the circle are equal in length.

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 24200, and Rs 26620 respectively, what is the rate of interest?

The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: π = 22/7)

Find out the odd word/letters/number pair from the given alternatives

What is the value of tanπ4+A×tan3π4+A ?