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10 cards from this deck
Each term = previous term × constant ratio rrr
Constant multiplier between terms, denoted rrr
Tn=arn−1T_n = ar^{n-1}Tn=arn−1 (aaa = first term, rrr = ratio)
Check if ratios of consecutive terms are all equal
Always one less than term number nnn
No, would make ratio undefined (division by zero)
No, would make second term zero (impossible in GP)
Terms alternate between positive and negative signs
Tn=Tn−1×rT_n = T_{n-1} \times rTn=Tn−1×r for n≥2n \geq 2n≥2
GPs are integer points of exponential function graphs
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