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?

How many times can you subtract the number 5 from 25?

Find the next number in the sequence

5 12 24 36 ?

I have branches, but no fruit, trunk or leaves. What am I?

If 21x = 79x, what is the value of x?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

You see me once in June, twice in November, and not at all in May. What am I?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

The more of this there is, the less you see. What is it?

How do you go from 98 to 720 using just one letter?