Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

There is a place where if I stand up straight, I will still be considered sideways.

Why is 6 afraid of 7?

What do you call a fish without an eye?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

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?

Which part of London exists in France as well ?