Teacher ask the student

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

what did student replied ?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

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

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?