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.

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

What four weights can be used to balance from 1 to 30 pounds?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

What is the next number in this series?

4,12,84,3612....