Average of ten positive numbers is x. If each number increases by 10%, then x-

There are 23 poles with a constant distance between each pole. A car takes 24 seconds to reach the 12th pole....

Find out the wrong number in the series: 190, 166, 145, 128, 112, 100, 91

If the n terms of an arithmetic progression is 4n+1, then the common difference is-

A boat goes 13km upstream in 39 minutes. The speed of stream is 3km/hr. The speed of boat in still water is-

In a 500m race, the ratio of speeds of two contestants A and B is 3: 4. A has a start of 140m. Then A wins by-

A person buys certain number of marbles at 20 per taka and an equal number at 30 per taka. He mixes them and s...