What does this rebus mean?

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Buy me, smell me or deliver me, I do not change.

Who am I?

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

Identify the 10 differences between the two given pictures.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

Look at the picture and find out which square is not linked with any of the other squares.

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?