Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

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

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Count the number of triangles in the picture below:

What does the below mathematical rebus mean?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Count the number of triangles in the given picture.

Can you move two match sticks to make it 430?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?