Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

I know a nine-letter word having only one vowel.
Do you ?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Count the number of lines in the image below ?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

What has lots of eyes, but can’t see?