If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten. How is this possible?

Three kinds of apples are mixed in a box. How many apples must you take to be sure of at least 2 apples of one kind?

Mr. Smith has two children. If the older child is a boy, what is the probability that the other child is also a boy?

If three men can chop down three trees in three hours, how many men will it take to chop down six trees in six hours?

What’s the least number of chairs you would need around a table to sit four fathers, two grandfathers, and four sons?

If you count 20 houses on your right going to school and 20 houses on your left coming home, how many houses did you count?

John has been hired to paint the numbers 1 through 100 on 100 apartments. How many times will he have to paint the number 9?

If six thousand six hundred and six dollar is written as $6606, then write eleven thousand eleven hundred and eleven dollars.

There was a small get-together. There were a total of 28 handshakes exchanged between the guests. How many guests were present?

A shop sells 1 chocolate for $1. You can exchange 3 wrappers for 1 chocolate. If you have $75, how many chocolates can you get?

The day before yesterday, Chris was 7 years old. Next year, she’ll turn 10. How is this possible? When is Chris birthday?

If one and a half teenagers can eat one and a half pizzas in one and a half days, how many pizzas can 9 teenagers eat in 3 days?

A house has 6 stories, each the same height. How many times as long is the ascent to the sixth floor as the ascent to the third?

If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. What time is it now?

John’s mother is thrice his age. 11 years from now, his mother’s age will be twice that of his. How old is his mother?