What value will replace the question mark in the following equations ?
->  ? - 1936248 = 1635773

A. 3572021
Posted in:  Numbers -  Arithmetic -  Mathematics

Sound travels at 330 meters a second.
How many kilometers away is a thunder cloud when it`s sound follow the flash after 10 seconds ?

A. 3.3

A is thrice as good as B and can finish a work in 60 days less than that of B. If they work together, in how many days work will be completed ?

C. $22{1/2}$ DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

The least prime number is :

C. 2
Posted in:  Numbers -  Arithmetic -  Mathematics

If a + b + c = 0, then the value of (a2/bc + b2/ca + c2/ab) is :

D. 3