
Answer-first summary for fast verification
Answer: 40
There are two key properties that any probability function must meet. These are: 1. 0 ≤ P(x) ≤ 1 2. ΣP(x) = 1 Therefore, 10/100 + 20/100 + 30/100 + Y/100 = 1 60/100 + Y/100 = 1 60 + Y = 100 Y = 40
Author: Nikitesh Somanthe
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