# Sum or product

What is the probability that two dice fall will have the sum 7 or product 12?

Correct result:

p =  0.222

#### Solution:

$X=(2+5,1+6,3+4, 2.6) \ \\ t=6 \cdot \ 6/2=18 \ \\ p=4/t=4/18=\dfrac{ 2 }{ 9 }=0.222$

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