Do You See It?

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?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

It is always ahead of me yet I can never see it. What is it?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What is full of holes but still holds water?

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

You need to arrange three 7 and mathematical symbols to form number 1?