Question

Question 21:
42. If you roll a pair of
dice, what is the
probability that (at
least) one of the dice is
a 4 or the sum of the
dice is 7?
a.4/36
b.13/36
c.21/36
d. 15/36​

Answer 1

Answer:

15/36

Step-by-step explanation:

Total probability = 36

probability of getting 4 in at least one dice P(A)= 11/36

probability of getting sum of 7 P(B) = 6/36

P(A∩B) = 2 [(4,3)(3,4)]

P(AUB) = P(A)+P(B)-P(A∩B)

            = 11/36 + 6/36 - 2/36

            = 15/36