ACT Math Practice Question #2066 (Hard (580)) | Test Citadel
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ACT Math Difficulty: Hard (580)

Digital ACT Math Practice Question #2066

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What is the sum of the infinite geometric series: 36 + 36*(1/4) + 36*(1/4)^2 + ...?
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S = a_1 / (1 - r) = 36 / (1 - 1/4) = 48.

Masterclass Solution & Distractor Trap Analysis

Sum of an infinite geometric series with |r| < 1 is S = a_1 / (1 - r) = 36 / (1 - 1/4) = 48....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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