MO640 - Multiple-choice question
Considering the permutations below:
Choose the alternative that correctly relates each permutation to an expression with the same value:
a) I - αβ; II - β; III - βα; IV - α
b) I - β; II - βα; III - α; IV - αβ
c) I - αβ; II - α; III - βα; IV - β
d) I - α; II - αβ; III - β; IV - βα
e) None of the above.
Original idea by: Mario Akita
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