What number should come in place of the question mark below?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

Different lights make me strange by changing me into different sizes. What am I?

Imagine you are in a room with no windows or doors. How will you get out?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

What is common among 11, 69, and 88?

Solve the mathematical equation in the picture below.

Why Aeroplane windows are round?

What does the below rebus riddle means?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------