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1 vote
A n+1 =2^ (a n ) -1 and a 1 =2

a. 3, 7, 127, 7217
b. 7, 11, 127, 7217
c. 11, 27, 127, 7217
d. 2, 3, 7, 127

User Gjon
by
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1 Answer

1 vote

Answer:

It is for sure letter d

Explanation:

Hope this helps

User Zack Newsham
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