Is set containment ? an equivalence relation

Reference no: EM131239939

1. Is set containment ⊂ an equivalence relation?

2. Decrypt the message q kiv pih kpmmhjczomz, which was encrypted using a cipher that shifted by eight letters.

3. Decrypt the message q kiv pih kpmmhjczomz, which was encrypted using a cipher that shifted by eight letters.

4. Decrypt the message dtrn utzaknr dbbv utzaknr T lbt'b zoam po gabbd hvlwoec, which was encrypted using a Vigen`ere cipher with key word lady. Which type of Vigen`ere cipher was used?

Reference no: EM131239939

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