Why are all black people so quick ?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

People make me, save me, change me, raise me. What am I?

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?

Christina makes tasty toast in a small pan. After toasting one side of a slice, she turns it over. Each side takes 30 seconds. The pan can only hold two slices.
How can she toast both sides of three slices in 1 & 1/2 instead of 2 minutes?

What is the next number in this series?

4,12,84,3612....

A rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?

Different lights make me strange by changing me into different sizes. What am I?

What number when divided in half becomes zero?