Teacher ask the student

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

what did student replied ?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

What is the word or phrase?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

What has many teeth, but cannot bite?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

What breaks yet never falls, and what falls yet never breaks?