How do you go from 98 to 720 using just one letter?

You can hear me, but you can't touch or see me.

What am I?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

When is the top of a mountain similar to a savings account?

Count the number of balls in picture below:

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

In the image below, can you find the value of an angle(y)

What kind of band never plays music?