What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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

What has a ring but no finger?

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

How can you tell a raw egg from a hard-boiled egg?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?