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.

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

Can you name some countries which do not have the alphabet 'A' in them?

I travel all around the world but always stay in the corner. What am I?

What is the centre of gravity?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

How is the moon similar to a dollar?