In a one kilometre race A, B and C are the three participants. A can give B a start of 50m. and Ca start of 69 m. The start, which B can allow C is

The east positive integer that should be subtracted from 3011 x 3012 so that the difference is a perfect square is-

Which of the following numbers is divisible by 25?

Two equal glasses are filled with alcohol and water respectively. First glass is filled with (2/5) of alcohol and second glass is filled with (1/4) of alcohol. Then, the glasses are filled up with water and the resultant mixture is put into a big Jug. Find the ratio of alcohol and water in the jug.

A man invested a certain sum in scheme A at 15% p.a. for 2 years and earned Rs 1950 as simple interest. He increased his sum by Rs. ‘x’ and invested in another scheme B at 10% p.a. C.I. for 2 years and received Rs. 1680 as compound interest. Find the value of ‘x’. 

If a, b are rational number and (a-1)√2+3=b√2+a, the value of (a+b) is : 

Giving two successive discount of 25 % at a article is equal to giving one discount of ___%.

In what time will the simple interest be $$ {2\over5} $$ of the principal at 8% per annum?