Find the mean of first Five Prime Numbers.

When a amount is given at a compound interest rate of 18% per annum, the interest received on compound annual payable in two years will be Rs 960 more than half yearly interest. What is the amount?

If each edge of a cube is reduced by 25 percent, find the ratio of the volume of the original cube and the resulting cube?

If an item is sold for Rs. 270, there is a loss of 10 percent on it , then what will be the cost price of that item?

In the year 2016, there were 52 weeks and P days. Find the value of P.

Find the value of $$ {\sqrt{(cos^{2}20°+cos^{2}70°)}}$$

Find the value of $$\left({1\over {sin 60°}} \right)^{2} + (cos 30°)^{2} \over(tan 45°)^{2}$$.

Find the value of ∠BAC in the given diagram If AB=AC=CD and ∠ADB=20°?