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?

What can you see in the middle of March and April that you can never see in any other month?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

What is the word or phrase?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What is more useful when it is broken?

Why are televisions attracted to people?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?