Question: a = { 2 , 3 , 4 , 5 } b = { 4 , 5 , 6 , 7 , 8 } two integers will be randomly selected from the sets above , one integer from set a and one integer from set b . what is the probability t that the sum of the two integers will equal 9 ?
A) 0.15
B) 0.20
C) 0.25
D) 0.30
E) 0.33
Correct answer: B
Grade: 7 | Topic: Statistics and Probability | Difficulty: Easy | Standard: 7.SP.C.7