Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

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?

Decode below rebus
D
N
A
T
S , D

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

You are offered an opportunity to win a fortune. There are 100 precious black stones and 100 unworthy white stones. There are two different sacks labelled as "Heads" and "Tails". You can distribute the stones as you wish. Then a coin will be flipped. Then you will have to choose a stone from the corresponding sack. If you pick up a black stone, all the fortune of black stones is yours but if you pick up white, you get nothing.

How will you distribute the stones so that you can maximize your chances of winning?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?