What number when divided in half becomes zero?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

You can move only two matchsticks in the given picture. What is the highest number you can form by doing it?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What kind of band never plays music?

Can you find the company name in the pictogram below?

A shopkeeper allows people to buy a cold drink bottle in exchange for five empty bottles. A guy had a party at home and spent 77 cold drink bottles at the party. Now he has 77 empty bottles with him.

How many bottles do you think he can buy in exchange for those 77 empty bottles?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Which country gets ill every time?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?