Question

Choose a formula for the nth term of the sequence: a^2/2 , a^4/4 , a^6/8 , ...

A) a^2n/2^n B) a^2n/2n
C) a^2n/2+n D) 2^n/a

Answer 1

\[\huge a^{2/b},\;a^{4/b},\;a^{6/b},\;...\]
Let's ignore the bottom (b's) of the fraction for a sec,
do you see a pattern within the top numbers?

Answer 2

okay, yep I see it @zepdrix

Answer 3

okay so D is definitely not the answer

Answer 4

Okay I think I get it! Would the answer be A? @zepdrix

Answer 5

Yes very good! :)
Wow you figured that out quickly. Good job.

Answer 6

@zepdrix Thank you! :)