A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

Queen Elizabeth organised a royal party.

To Avoid uninvited guest royal family set a password.
Jack (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.
Second guest comes , the security person said 'six' and guest replied with 'three'.

Jack thought is enough and he walked to the entry point. The security person said 'eight' , Jack replied smilingly 'four'.
He was immediately thrown out of the party. why ?

You can see three almost identical images below. Can you spot the odd one out from them?

What is the word or phrase?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

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 count the number of quadrilaterals in the picture below?

Count the number of triangles in the given picture.