- #1

- 93

- 1

## Main Question or Discussion Point

Lets share some mathematical phenomena that are just cool (for math people)

if you multiply any number of integers whose digits are only 1, the product will always be palandromic. Grab a calculator and see for your self. I would be really interested to see a proof for this phenomena.

heres another one, you;ve probably heard of it before.

take a 4 digit integer. All are > 0, and a maximum of 3 of the digits can be equal.

rearrange the digits in such a fashion where the integer abcd has the property a>b>c>d.

abcd - dcba = a 4 digit integer

Repeat over and over and see what happens.

I would also very much like to see a proof for that.

if you multiply any number of integers whose digits are only 1, the product will always be palandromic. Grab a calculator and see for your self. I would be really interested to see a proof for this phenomena.

heres another one, you;ve probably heard of it before.

take a 4 digit integer. All are > 0, and a maximum of 3 of the digits can be equal.

rearrange the digits in such a fashion where the integer abcd has the property a>b>c>d.

abcd - dcba = a 4 digit integer

Repeat over and over and see what happens.

I would also very much like to see a proof for that.