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?

Find out the number of circles in the given picture having Illusion

You can hear me, but you can't touch or see me.

What am I?

When we see 2 but call 10?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

Spot 5 differences in two Christmas tree below:

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

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

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

What four weights can be used to balance from 1 to 30 pounds?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?