What do you answer even though it never asks you questions?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Which number should replace the question mark?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

I have branches, but no fruit, trunk or leaves. What am I?

Why 1729 is a magic number? Answer Logically.

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

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

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?