There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

What's the best place to go shopping in the ocean?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?