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askme12345

  • 4 years ago

Suppose your SSN is 121-21-2121. How many other people could have the same SSN? SSN(x)= (x-a1)(x+a2)(x-a3)(x+a4) and so on..

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  1. Ishaan94
    • 4 years ago
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    What is a1, a2, a3,.... ?

  2. askme12345
    • 4 years ago
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    they are the numbers of the SSN for example if the number is 121-21-2121 in the SSN(x)- (x-1)(x+2)(x-1)(x+2) and so on

  3. Ishaan94
    • 4 years ago
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    Okay so you want a SSN such that SSN(x) = SSN(x') Now your SSN is 121212121 4 2s and 5 1s and In total 9 numbers

  4. Ishaan94
    • 4 years ago
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    Do you know Permutations?

  5. askme12345
    • 4 years ago
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    barely sorry

  6. Ishaan94
    • 4 years ago
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    Hmm I am not sure, Maybe \[\Huge9_{P_{4}} + 9_{P_{5}}\] \[\frac{9!}{5!} + \frac{9!}{4!}\] \[ 9\times8\times7\times6 + 9\times8\times7\times6\times5\] People can have same SSN polynomial as yours

  7. askme12345
    • 4 years ago
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    i have to state one that would be? how can i find one that is equ to 121212121

  8. Ishaan94
    • 4 years ago
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    Your SSN is unique but not your SSN polynomial

  9. askme12345
    • 4 years ago
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    yeah I understand I have to find an SSN polynomial equal to that ssn

  10. TuringTest
    • 4 years ago
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    Oh no! Not this problem again. Askme, Your teacher is a sadist!

  11. Tomas.A
    • 4 years ago
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    wtf is ssn

  12. TuringTest
    • 4 years ago
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    Social Security Number lol!

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