It belongs to you, but other people use it more than you do. What is it?

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.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

what does the below rebus means?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

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

Who can jump higher than a Mountain?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.