What is the centre of gravity?

How many words can a pen with half refill write?

Prove that the below maths equation is true.

8 + 8 = 91

What country can make you shiver?

When it's bad luck to meet a black cat?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Which city is three-fifths chick two third cat and 50% goat?

We know that money can be names differently for the purpose it is used for. Some of the examples of money given at following places or for following activities:

In temple = Daan
In school = Fees
During marriage = Dowry
For divorce = Alimony
Paying government = Tax
In court = Fine
Employer to employee = Salary
To kidnappers = Ransom
For illegal reason = Bribe
To civil servant retirees = Pension

Do you know what do we call the money a husband gives to his wife?

Why is 6 afraid of 7?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?