# How to derive an algorithms that generates check sums [closed]

Column S contains the check sums of the values given in columns R and Xc. Does anyone here have an idea about how to find the corresponding algorithm to calculate the check sums? Thanks in advance

    R    Xc   S
647   72   218
441   47   618
594   67   188
581   55   517
497   58   865
553   65   661
541   52   309


Best regards,

Holzi

## closed as off-topic by Yuval Filmus, Rick Decker, Evil, David Richerby, JuhoMar 28 '17 at 13:14

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question does not appear to be about computer science, within the scope defined in the help center." – Yuval Filmus, Rick Decker, Evil
If this question can be reworded to fit the rules in the help center, please edit the question.

• This is a puzzle rather than a well-defined question. – Yuval Filmus Mar 23 '17 at 13:57
• – D.W. Mar 23 '17 at 15:55