Which is the smallest number that you can write using all the vowels exactly once?

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

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

What does this rebus puzzle means ?

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

What English word has three consecutive double letters?

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?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?