Math Riddles With Answers

What comes next: 2, 3, 5, 7, 11, ?

What comes next: 1, 3, 6, 10, 15, ?

What comes next: 100, 91, 83, 76, 70, ?

What comes next: 1A, 2B, 4D, 8H, ?

What comes next: 12, 21, 13, 31, 14, ?

One brick weighs 1 kg plus half a brick. How much does one brick weigh?

A parent is 36 and a child is 9. In how many years will the parent be three times the child's age?

Two numbers add to 20. One number is 6 more than the other. What are the numbers?

You have 8 coins made of 10p and 20p coins. The total is £1.20. How many 20p coins are there?

I am a number. Double me and add 6 to get 30. What number am I?

Fill the missing number: 4, 8, 12, 16, ?

Fill the missing number: 3, 6, 12, 24, ?

Fill the missing number: 5, 10, 15, 20, ?

Fill the missing number: 1, 4, 7, 10, ?

Fill the missing number: 2, 4, 8, 16, ?

Fill the missing number: 10, 9, 8, 7, ?

Fill the missing number: 2, 5, 8, 11, ?

Fill the missing number: 100, 90, 80, 70, ?

Fill the missing number: 7, 14, 21, 28, ?

Fill the missing number: 1, 3, 5, 7, ?

There are 4 tables with 2 chairs each. How many chairs are there?

I am greater than 10, less than 20, even, and my digits add to 7. What number am I?