How is a fly different from a mosquito?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

What is the below Rebus indicate?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

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

Who am I?