Sum and product of two numbers is 11 and 18 respectively. What will be the sum of their reciprocals? 

There are 2 to 40 minutes on any watch. So how many degree angles will be made between the two needles?

The greatest number less than 1500, which is divisible by both 16 and 18, is:

In 3 years ₹ 3000 amounts to ₹ 3993 at x % compound interest, compounded annually. The value of x is 

The compound interest earned in two years at 8 % per annum is 3993.6 . What is the sum invested? 

A took 15 sec. to cross a rectangular field diagonally walking at the rate of speed 52m / min and B took the same time to cross the same field along its sides walking at the rated speed 68 m / min. The area of the field is: 

The smallest positive integer n for which 864 x n is a perfect cube, is: 

Find the value of $$\left({sin 35°\over cos55°} \right)^2+\left({cos55°\over sin 35°} \right)^2 \ -2 sin^{3}30°$$