Assume you are rolling two fair dice once . The probability of obtaining at least one 3 or one 4 equals _________.
A) 0.3333
B) 0.5556
C) 0.1111
D) 0.0833

Question

Quizplus · Accepted Answer

The total number of possible outcomes is 6x6 = 36.
The number of outcomes that do not have either a 3 or a 4 is 4x4 = 16 (rolling anything besides a 3 or 4 on each die).
Therefore, the number of outcomes that have at least one 3 or 4 is 36-16=20.
The probability of rolling at least one 3 or 4 is therefore 20/36=0.5556.

Assume You Are Rolling Two Fair Dice Once