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

I have eight fingers and two thumbs but I do not live. What Am I?

What has a ring but no finger?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

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

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

If six children and two dogs were under an umbrella, how come none of them got wet?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Through your logical capabilities, can you make 7 an even?