I am lying and I always lie. Tell me whether I am lying or telling the truth.

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

A bomb exploded in a room full of married couples and no one died. How?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

In the picture given below, can you find out which digit will take place of the question mark?