HARD MATH RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Only one time. After that, you would be subtracting from 20. Did you answer this riddle correctly?
YES  NO  

They ordered three cups, one for each person. The grandmother is also a mother and the mother is also a daughter.

Another solution: They ordered two cups. Both are mothers and daughters and one is a grandmother. Did you answer this riddle correctly?
YES  NO  

You earned $500 $100 = $400. Did you answer this riddle correctly?
YES  NO  

Time. Did you answer this riddle correctly?
YES  NO  

Water. Did you answer this riddle correctly?
YES  NO  

Because the keys are on the inside! Did you answer this riddle correctly?
YES  NO  

A friend. Did you answer this riddle correctly?
YES  NO  

Ice Did you answer this riddle correctly?
YES  NO  

No, they come that way!) Did you answer this riddle correctly?
YES  NO  

The Titanic. Did you answer this riddle correctly?
YES  NO  

Your breath Did you answer this riddle correctly?
YES  NO  

Plum Did you answer this riddle correctly?
YES  NO  

Ice Did you answer this riddle correctly?
YES  NO  

He threw the ball up. Did you answer this riddle correctly?
YES  NO  

Paper Did you answer this riddle correctly?
YES  NO