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Given equations, 3 & 7 = 64 → 3 × 7 × 3 + 1 = 64 6 & 6 = 109 → 6 × 6 × 3 + 1 = 109 9 & 8 = 217 → 9 × 8 × 3 + 1 = 217 For the fourth equation: 10 & 9 → 10 × 9 × 3 + 1 = 271
Select the option that is related to the third number in the same way as the second number is related to the first number.
85: 169:: 97: ?
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