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 numerator of a fraction is multiple of two numbers. One of the numbers is greater than the other by 2. The greater number is smaller than the denominator by 4. If the denominator 7+C (C > -7) is a constant, then the minimum value of the fraction is

On dividing a certain number by 342 we get 47 as remainder. If the same number is divided by 18, what will be the remainder ?

If r sinθ=3 and r cosθ=1, then the values of r and θ are: (0°⩽θ≤90°)

If  x=2+32-3, then what is the value of x+1/x ?

The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find the mean of marks of the students of three divisions of Class X.

If an equilateral triangle has side 12 cm, then what is the difference (in cm) between the circumradius and inradius?

What is the value of equation a3+b3+c3-3abc if a2+b2+c2=ab+bc+ca+4 and a+b+c = 4.