What comes next in the series?

B, D, H, N, ?

Which single discount will be equal to two successive discounts of 12% and 5%?

Which is the largest non-polar desert in the world?

The ratio between the weights of gold and silver in an alloy is 17:3. If the weight of silver in the alloy is 2.7 gm, find the weight of gold in the alloy?

Where is the headquarters of Interpol located?

The sum of two digits of a number is 10. If the digits are interchanged, then its value increases by 18. Find the number.

The perimeter of a triangle is 28 cm. If the length is 5/2 times its breadth, find the length and breadth of the triangle.

Find the mean of the first 6 prime numbers?