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?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

The King of a distant land had heard that Birbal was one of the wisest men in the East and so desired to meet Birbal. He sent Birbal an invitation to visit his country.

In due course, Birbal arrived in the distant kingdom. When he entered the palace he was flabbergasted to find not one but six kings seated there. All looked alike. All were dressed in kingly robes. Who was the real king?

The very next moment he got his answer. Confidently, he approached the king and bowed to him.

How did Birbal know who was the real king?

Can you count the number of triangles in the picture below?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

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

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

If six children and two dogs were under an umbrella, how come none of them got wet?

Replace the question mark in the picture below.