Riddles Guru

Riddles Guru – home to more than 1400 interesting riddles, for you to solve, flex your mind and have fun at the same time!

Feel free to browse through the riddles @ Riddles Guru based on the tagged categories. Most of the riddles are tagged in more than one category.

Riddle of the Day

Pool Balls - Sum of 30

You have 8 balls numbered 1, 3, 5, 7, 9, 11, 13 and 15. Select 3 balls and put them into the circles such that the sum of the numbers on them add up to 30.

3 balls sum 30

Answer

Rotate ball 9 to make into a 6. Place the balls 6, 11 and 13 to get a sum of 30.

All the numbers are odd. There is no way to get an even number, 30, by summing three odd numbers together. At least one even number is required.