You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What is so fragile that saying its name breaks it?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

A man dies of old age on his 25 birthday. How is this possible?

What is the centre of gravity?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Can you calculate the probability of getting a sum of six when a dice is thrown twice?