A 280 meter long train is moving at 60 km/h. The time taken by the train to cross a 220 meter long tunnel, is

A train 110 m long is travelling at a speed of 58 kmph. The time in which it will pass a passerby walking at 4 kmph in the same direction is

Nitin is 7 ranks ahead of Joginder in a class of 39. If Joginder's rank is 17th from the last, what is Nitin's rank from the begining?

There are 15 chairs in a row. Position of P is at the middle, and Q is at 12th position counting from the right. How many chairs are there between P and Q?

Eleven friends meet at a party. Each one shakes hand with each of the others once. The number of possible hand shakes is

If the simple interest on a sum of money at 5% per annum for 3 years is Rs. 1,200, find the compound interest on the same sum for the same period at the same rate.