Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

What do you think with the below Picture ?

10+10 and 11+11 can give you the same answer.

Explain how?

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What has 88 keys?

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?

John was drowned by he was not wet. How?

what's the probability of getting a king or a queen from a pack of 52 cards?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?