What is in seasons, seconds, centuries and minutes but not in decades, years or days?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Which flower has two lips?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

What makes this number unique: 8,549,176,320?

What English word has three consecutive double letters?

Why despite killing dozens of people Charley and Wilma were not punished?

Spot the 3 Differences in the given Picture.

Can you find any error in the following sentence?

A taxi was standing outside a fort at night. A man came out of the fort, opened the gate and hit the taxi driver killing him instantly. He took all the money out of the meter and started running till he was caught by a local sheriff.

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?