You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What does this mathematical rebus means ?

Decode this picture on T-Shirt and tell what it says ?

How many words can a pen with half refill write?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What has a ring but no finger?

Can you solve the below tricky visual equation?