AP BIOLOGY

HEREDITY

BASICS OF PROBABILITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Two dice are rolled. What is the probability that the sum is 9?
A
1/4
B
1/9
C
5/12
D
7/12
E
1/12
Explanation: 

Detailed explanation-1: -The probability of getting 9 as the sum when 2 dice are thrown is 1/9.

Detailed explanation-2: -About 36 different combos are present for the two dice i.e. 6 possibilities for the first dice and 6 possibilities for the second. Therefore, the probability that the sum is 9 or higher is 5/18.

Detailed explanation-3: -That makes 36 possible outcomes, each with probability 1/36. Four of 36 outcomes sum to 9. The probability of this event is 4/36 (1/9, or 11.11%). A pair of dice is tossed, what is the probability of getting a sum of at least 9?

There is 1 question to complete.