In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

Before Mount Everest was discovered, what was the highest mountain in the world?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What kind of tree can you carry in your hand?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

When it is alive we sing, when it is dead we clap our hands. What is it?

What does this rebus means ?