Question

What is the Probability of getting a sum of ‘9’ on rolling a dice twice?

A 1/6 Correct Answer Incorrect Answer
B 1/12 Correct Answer Incorrect Answer
C 3/4 Correct Answer Incorrect Answer
D 2/9 Correct Answer Incorrect Answer
E 1/9 Correct Answer Incorrect Answer

Solution

Now, the concerned events should have sum of ‘9’ i.e., number on Dice 1 + number on Dice 2 = 9 This can be seen in three cases: (3,6) , (6,3) , (4,5) , (5,4) So Concerned events = 4 And, we know total events are always ‘36’ So, Probability = 4/36= 1/9

Practice Next

Relevant for Exams:

×
×