Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

What is the coolest letter in the alphabet?

Which five letter word can be added at the end of below word to form a
valid word?

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Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

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