If ABC and DEF are both 3-digit numbers such that A, B, C, D, E, and F are distinct non-zero digits such that ABC+ DEF= 1111, then what is the value of A+B+C+D+E+F ?

What is the total number of digits printed, if a book containing 150 pages is…

There are certain 2-digit numbers. The difference between the number and the one obtained on…

If the route between G and Cis closed, which one of the following stations need…

In how many different ways can a train travel from F to A without passing…

Two walls and a ceiling of a room meet at right angles at a point…