Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Why Aeroplane windows are round?

Which point will the car reach to go out?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

Can you name an animal whose killing cannot be performed without spilling your own blood?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

What is the coolest letter in the alphabet?