10+10 and 11+11 can give you the same answer.

Explain how?

Which is the smallest number that you can write using all the vowels exactly once?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Can you find a rabbit in the given picture?