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Mathematics, 22.10.2019 05:50 dbende00
You have been assigned a group number. the message your group receives is listed below. this message is top
secret! it is of such importance that it has been encoded four times.
your groupβs portion of the coded message is listed below.
group 1:
1500, 3840, 0, 3444, 3420, 4350, 0, 4824, 3672, 3474, β2592, β6660, 0, β5976, β5940, β7560, 0, β8388,
β6372, β6048
group 2:
2424, 3024, β138, 396, β558, β1890, β1752, 1512, β2946, 1458, 438, 540, β24, 72, β90, β324, β300, 270,
β510, 270
group 3:
489, 1420, 606, 355, 1151, 33, 1002, 829, 99, 1121, 180, 520, 222, 130, 422, 12, 366, 304, 36, 410
group 4:
β18, 10, β18, 44, β54, 42, β6, β74, β98, β124, 0, 10, β12, 46, β26, 42, β4, β36, β60, β82
group 5:
β120, 0, β78, β54, β84, β30, 0, β6, β108, β30, β120, 114, 42, 0, β12, 42, 0, 36, 0, 0
a. store your message in a matrix c with two rows. how many columns does matrix c have?
b. begin at the station of your group number, and apply the decoding matrix at this first station.
c. proceed to the next station in numerical order; if you are at station 6, proceed to station 1. apply the
decoding matrix at this second station.
d. proceed to the next station in numerical order; if you are at station 6, proceed to station 1. apply the
decoding matrix at this third station.
group 6:
126, 120, 60, 162, 84, 120, 192, 42, 84, 192, β18, β360, β90, β324, 0, β18, β216, β36, β90, β324
e. proceed to the next station in numerical order; if you are at station 6, proceed to station 1. apply the
decoding matrix at this fourth station.
f. if we know the original message had 21 characters and the last letter was an h, decode your message.
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Answers: 1
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