Quantitative Aptitude - Arithmetic Ability Questions

If secA/(secA ­- 1) + secA/(secA + 1) = x, then x is

A bag contain equal number of 1 rupee, 50 paisa and 25 paisa coins. If the total amount is Rs 105, then how many coins of each type are there?

If 5x/2 - [7(6x - 3/2)]/4 = 5/8, then what is the value of x?

O is the centre of the circle and ∠AOB = 150°, and the shaded portion is x part of the circular region, then x = ?

Find 2 consecutive natural numbers, sum of whose squares is 25.

A sum of money invested at simple interest becomes 13/10 of itself in 2 years and 6 months. What is the rate (in percentage) of interest per annum?

Find equation of the perpendicular to segment joining the points A(0,4) and B(-5,9) and passing through the point P. Point P divides segment AB in the ratio 2:3.

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?