I’m tall when I’m young, and I’m short when I’m old. What am I?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

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?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

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

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

What does this mean?

CCCCCCC

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.

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?