If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

What does this rebus riddle means ?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

what does this below rebus represent identXQQQQQME

What goes up but never comes down?

What do you call a fish without an eye?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?