Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Count the number of lines in the image below ?

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?

why number 8549176320 is one of a kind?

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

People put me on the table and cut me but do not eat me. What am I?

I travel all around the world but always stay in the corner. What am I?

Find the next number in the series.
1 10 24 43 67 ?