Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Prove that twice of ten is the same as twice of eleven.

Which is the smallest number that you can write using all the vowels exactly once?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

A very interesting trivia question for all.

Why do men's shirts have their buttons on the right side and women's have buttons on the left-hand side?

What's a single-digit number with no value?

In a kingdom, King George did not allow any citizen to visit the world outside. Also, only a person with proper paperwork was allowed to enter or he was sent back. A wooden bridge was what connected the kingdom to the world. The king had appointed a sharpshooter who would check the every five minutes on the bridge to check. After checking, he would go back to his hut and return exactly after five minutes again. The bridge took 9 minutes to cross.

A merchant was able to escape the kingdom without harming the shooter. How?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?