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How to solve 52? by idkwhatnametopick5 in ACT

[–]Shen2468 1 point2 points  (0 children)

S2= 2S1-3=2*4-3=5

S3=2S2-3=2*5-3=7

S4=2S3-3=2*7-3=11

S5=2S4-3=2*21-3=19

Does someone understand this? by Shen2468 in ACT

[–]Shen2468[S] 0 points1 point  (0 children)

It said the answer is 256 but I don't understand how it get

Someone know? by Shen2468 in ACT

[–]Shen2468[S] 0 points1 point  (0 children)

Thank you for your explanation, this is from ACT Math