How many sides does a circle have?

How can one talk without saying a single word?

Out of four images which one is the odd one out?

I have no life, but I can die. What am I?

If,

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

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

D + F = ?

Solve the rebus riddle in the picture below.

How many words can a pen with half refill write?

Count the number of triangles in the picture below:

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?