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OpenStudy (anonymous):
what is the last number in the series number 7,21,63,189?
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OpenStudy (anonymous):
189*3
OpenStudy (anonymous):
Well as you can see from the other numbers it seems it is multiply be 3 For example 7 * 3 = 21, 21 * 3 = 63, 63 * 3 = 189 So if you are trying to find the next number just multiply 189 * 3 = 567
OpenStudy (anonymous):
567
OpenStudy (agent0smith):
"what is the last number in the series number" "last number" isn't very descriptive here... you mean the next number?
OpenStudy (anonymous):
tnx..
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