Edward C. answered • 02/03/15

Tutor

5.0
(427)
Caltech Grad for math tutoring: Algebra through Calculus

If you roll a single die there are 6 possible outcomes (1,2,3,4,5,6), 2 of which are greater than 4.

So in a single roll the probability of getting a number greater than 4 is 2/6 = 1/3.

If you roll two dice, these are independent events so the probability that roll 1 is greater than 4 and roll 2 is greater than 4 is the product of each individual event, so P(both > 4) = P(roll 1 > 4) * P(roll 2 > 4) = (1/3) * (1/3) = 1/9

Mansoor A.

so if it is asked what is the probability of at least get one higher than 4 in two dice roll of this example then 1/3+1/3=2/3. Correct?02/25/21