SOLUTION: Find the 100th term from this sequence 3,6,12,24,48.

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Question 178750: Find the 100th term from this sequence 3,6,12,24,48.
Found 2 solutions by Fombitz, stanbon:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
+a%5B1%5D=3%2A2%5E0=3%2A1=3
+a%5B2%5D=3%2A2%5E1=3%2A2=6
+a%5B3%5D=3%2A2%5E2=3%2A4=12
+a%5B4%5D=3%2A2%5E3=3%2A8=24
+a%5B5%5D=3%2A2%5E4=3%2A16=48
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.
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+a%5Bn%5D=3%2A2%5E%28n-1%29
+a%5B100%5D=3%2A2%5E%2899%29
or approximately
+a%5B100%5D=3%2A6.338x10%5E%2829%29%29
+a%5B100%5D=1.901x10%5E%2830%29%29

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the 100th term from this sequence 3,6,12,24,48
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r = 6/3 = 2
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a(n) = [a(1)]r(n-1)
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a(100) = 3*2^(100-1)
a(100) = 3*6.338...x10^29
===========================
Cheers,
Stan H.