Question

Logic problems

Answer 1

So the social security polynomial : ssn(x)= (x-a1)(x+a2)(X-a3) (x+a4).. *and so on*
Suppose your SS# is 121-21-2121. How many other people could have the same polynomial?

Answer 2

There's something about this question that I don't like.

Answer 3

Lol - I agree. If your willing to try, I can explain furthur

Answer 4

Explain further anyway. Something might click

Answer 5

So everyone recieved a unique code that they called their "social security number" they had to plug that code into a equation called SSN(x)=(x-a1)(x+a2)(x-a3) and so on..

then a few questions were asked :
a) suppose you have a SS number in which the digits a1,a3,a5,a7 are all different (accroding to the equation they are all negative) and a2,a4,a6,a8 are all different (positive) Give two SS numbers that have the same ssn(x) polynomial.

and then this question b) Suppose your SSN is 121-21-2121. What would your polynomial be - It would be ssn(x)=(x-1)(x+2)(x-1)(x+2) and so on, how many other people could have the same SSN(X)?

Answer 6

What course are you currently taking?

Answer 7

Pre-Calculus

Answer 8

Is this question from a pre-calculus textbook? Is there a textbook associated with the course?

Answer 9

No, it was a project. The full handout is posted online if you want a full look

Answer 10

Okay

Answer 11

link?

Answer 12

https://docs.google.com/viewer?a=v&q=cache:x61kD6UwRJ0J:lshs.leesummit.k12.mo.us/sbrackman/PreCalculus/Worksheets/PC%25201st%2520Sem%2520Project.doc+&hl=en&gl=us&pid=bl&srcid=ADGEESgG3zBU5DJui-CXq50Dyz7X9GN6xFs7qSPKH35lO29fowclovNOsgh608x8cXq4NADjkXlPGWrCfx9JlFtqA0v7EF276towh0stiGcYcscG6slmwaPWCPmK9dDyrBU995PlG0PU&sig=AHIEtbTwnI9PIAIB07cEBVhdWeMqSCEk6w

Answer 13

I don't think I like this project. But this particular question seems to be about combinations and permutations

Answer 14

How many different ways can you write 121-21-2121 ?

Answer 15

if order doesn't matter

Answer 16

hmm - I know its plenty. Not sure how to approch this with a formula rather than writing it all out