Quantitative Aptitude - Arithmetic Ability Questions

The simple interest on a certain sum of money invested at a certain rate for 2 years amounts to Rs. 1200. The compound interest on the same sum of money invested at the same rate of interest for 2 years amounts to Rs. 1290. What was the principal?

The maximum number of common tangents that can be drawn to two disjoint circles is

What is the slope of the line parallel to the line passing through the points (3 , -4) and (-2 , 5)?

N professes to lose 25% on rice and uses a weight of 750 gm instead of 1 kg. What is the total profit or loss percentage?

If Sin θ = 20/29 , then what is the value of Sec Sin θ ?

If (1 + sinA)/cosA + cosA/(1 + sinA) = x, then the value of x is

The mean of a distribution is 21 and the standard deviation is 7. What is the value of the coefficient variation?

Find the odd letters from the given alternatives.