If 15th of February 1789 is Friday what will be the day of 15th of February 1790? 

The average age of x and y is 18 years. If z is equal to 9 years the average of x, y and z is -

A sum of Rs. 6400 amounts to Rs. 6724 at 10% p.a. compounded quarterly. Find the time period.

What angle is made by minute hand in 29 sec? 

Mohan, a shopkeeper, bought a shirt of list price ₹225 at a discount of 20%. If he wants a profit of 30% then he should sell the shirt for:

A vessel contain some litres of pure milk. If 25 litre of water is added to the vessel, then ratio between milk and water becomes 12:5, 17 litres of mixture is drawn from the vessel and 10 litre of water is added to the mixture. Find the new ratio between milk and water. 

What should come place of the question mark(?) in the following number series?
17, 18 , 26, 53 , 117, ? , 458