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10 cards from this deck
Each term = previous term × constant ratio
Fixed number to multiply each term by for next term
r=TnTn−1r = \frac{T_n}{T_{n-1}}r=Tn−1Tn
Tn=arn−1T_n = ar^{n-1}Tn=arn−1
First term of the sequence
First term has power 0, so nth has power (n-1)
Check all consecutive ratios are equal
x=±abx = \pm\sqrt{ab}x=±ab
Multiplication (not addition)
Both positive and negative
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