How many times in a given day, minutes and hour clock comes in a straight line ?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

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

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Can you divide the below-given shape into four equal and identical pieces?

Give it food and it will live; give it water and it will die.

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?