It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

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

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

what one word does the below rebus identifies?