Hey, I do not understand the futility of this question.

Four, simply seems to be the answer.

A certain right pyramid with a square base has the same numerical surface area as its volume. If it is also the only right pyramid with a square base to have that certain surface area and volume, what is its height?

How many pairs of letters are there in the word INSENSITIVE which have the same number of letters between them as in English alphabet?

There are 16 words. Each word has two + two blanks. You need to fill up with the same pair of letters to form a word. For example: S _ _ ur _ _ e. The missing pair letters are A T. The word is Saturate.