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August 29, 2015

Homework Help: Math

Posted by Anonymous on Monday, May 4, 2009 at 6:44pm.

A message was encoded using the matrix
[7 2
3 1]
and you can decode the message 2 numbers at a time in a [1 x 2] matrix.

Here are the first four numbers:

66 21 119 35

I know it's coded row matrix times the decoder = the uncoded row matrix. (The key is A=1, B=2, etc.) I'm just not sure how to, because i tried it and got really large numbers. Help please?

thank you!

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