How can one talk without saying a single word?

What is at the end of a rainbow?

What is the coolest letter in the alphabet?

There was once a troop of 5 elves. The 5 elves were very dedicated on finding the magical treasure of 1000 coins. However, being elves, they were super geniuses, very greedy and they did not hesitate in taking lives of other elves. The 5 elves were named Aye, Bee, Cee, Dee and Ee, ranked from high to low respectively, from Aye to Ee. One fine day, their efforts brought results and they found 1000 coins. Now they had to split it in between them as per their ranks. The lowest ranked elf has to make the proposal. If the proposal is accepted by majority, it is agreed, or the suggesting elf is killed.

What proposal should elf Ee make ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

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

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What number when divided in half becomes zero?

One animal is different from the rest in the picture, and the challenge for the readers is to spot it in 5 seconds.

Why Aeroplane windows are round?