OpenStax, Algebra and Trigonometry 2e §13.7 Probability · Review Exercise 84 · Probability · Counting & chance
Probability · Review Exercise 84
Use summation notation to write the sum that results from adding the number twenty times.
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Algebra and Trigonometry 2e · §13.7 Probability · Review Exercise 84
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