How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

Prove that twice of ten is the same as twice of eleven.

Which is faster, Heat or Cold ? Explain.

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

A woman shoots her husband.

Then she holds him under water for over 5 minutes.

Finally, she hangs him.

But 5 minutes later they both go out together and enjoy a wonderful dinner together.

How can this be?

During which month do people sleep the least?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?