If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

What's the only room from which no one can enter or leave

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

Why 1729 is a magic number? Answer Logically.

Can you write down eight eights so that they add up to one thousand?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you move 2 matchsticks to form four equal sized squares.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?