Quantitative Aptitude - Arithmetic Ability Questions

The first and last terms of an arithmetic progression are 23 and ­42. What is the sum of the series if it has 14 terms?

A rice trader buys 12 quintals of rice for Rs 1,870. 15% rice is lost in transportation. At what rate should he sell to earn 20% profit?

Δ PQR is right angled at Q. If m√R = 30°, then what is the value of Cot P?

If x+1/x = 2, then the value of x7+2/x6 is equal to?

Choose the word is least like the other words in the group

If P = 7 + 4√3 and PQ = 1, then what is the value of (1/P2) + (1/Q2)?

Find two numbers whose sum is 29 and the product is 100.

x, y be two acute angles, x + y < 90° and sin(2x - 20°) = cos(2y + 20°), the value of tan(x + y) is