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

Out of four images which one is the odd one out?

What number should come in place of the question mark below?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

Count the number of lines in the image below ?

What is the word or phrase below?
R | E | A | D

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What does this Rebus Picture mean?

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point, he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

What is the end of everything?