Can you solve the maths in the below-given picture equation?

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?

Can you spot the hidden girl in the picture below?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Can you find out the total number of triangles in the given figure?

If two's company, and three's a crowd, then whats four and five ?

Can you move 2 matchsticks to form four equal sized squares.

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?