Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

What type of tree can I carry in my hand?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Which point will the car reach to go out?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?