I roll a pair of fair dice and add up the number of spots on the top. Denote this total by X. What is the probability that X is in the set {1, 2, 11, 12}?

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step-by-step explanation

2r= 2300

r =1150

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.