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Mathematics, 09.04.2020 01:44 DesperatforanA

A fair tetrahedral die has four triangular faces, numbered 1, 2, 3 and 4. The score when this die is

thrown is the number on the face that the die lands on. This die is thrown three times. The random

variable X is the sum of the three scores.

(i) Show that P(X = 9) = 10

64.

Can anyone pls solve this part with an explanation for each step?

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