A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

I am an odd number. Take away a letter and I become even. What number am I?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

They are three errirs in this question. Can you find them?

The more it dries, the wetter it becomes. Can you tell what it is?

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