Sum or product

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

Correct answer:

p =  0.2222

Step-by-step explanation:

 X = (2+5, 1+6, 3+4, 2.6) t=6 6/2=18 p=4/t=4/18=0.2222

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Showing 1 comment:
Q:Missed the case of 3*4, the answer should be 5/18 A: case 3*4=12 is included in case 3+4=7. So we count this case only once, not twice.

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