SOLUTION: How many terms are there is the geometric progression 2,4,8............128?

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Question 953111: How many terms are there is the geometric progression 2,4,8............128?
Answer by Fombitz(32388) About Me  (Show Source):
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2%5Ex=128
x=log%28%28128%29%29%2Flog%28%282%29%29
x=7
Seven terms: 2,4,8,16,32,64,128