What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

When is the top of a mountain similar to a savings account?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

Count the number of squares in the picture below.

How many times do a clock's hands overlap in a day ?

A generous owner of a company decided to give a bonus of $45 to every man and $60 to every woman on his birthday. But only one-ninth of the men and one-twelfth of the women were present to take the bonus.

Can you calculate the amount of money the owner spent if there were 3552 employees?

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

In which direction should the missing arrow point?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?