If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Why do people go to bed?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?