Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

Which famous Hollywood movie name is hidden in the below rebus?

Can you place three balls such that the equation shown in the picture holds true?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?