Aptitude - Probability - Discussion
Discussion Forum : Probability - General Questions (Q.No. 4)
4.
What is the probability of getting a sum 9 from two throws of a dice?
Answer: Option
Explanation:
In two throws of a dice, n(S) = (6 x 6) = 36.
Let E = event of getting a sum ={(3, 6), (4, 5), (5, 4), (6, 3)}.
 P(E) = |
n(E) | = | 4 | = | 1 | . |
| n(S) | 36 | 9 |
Discussion:
52 comments Page 3 of 6.
Surya said:
6 years ago
One dice have six faces so here we have two dices, so the formula is n2 (n Square). So 6*6 =36.
(1)
RRK said:
7 years ago
Is throwing a dice two times and throwing two dice together, same?
Please, anyone, clear me.
Please, anyone, clear me.
(1)
Sarita said:
9 years ago
How can it be 6x6?
Two throws of a dice mean 6+6. Your answer can only be till 12, not 36.
Two throws of a dice mean 6+6. Your answer can only be till 12, not 36.
Qaisar wagay said:
4 years ago
Here how could you consider (5, 4) and (4, 5) two different events? Please explain.
(4)
Rama said:
1 decade ago
How we got n(e) i.e, 4. Please friends somebody help me to find out the answer.
Prince said:
8 years ago
Why we take these cases only?
(3+6) = 9.
(4+5) = 9.
(5+4) = 9.
(6+3) = 9.
(3+6) = 9.
(4+5) = 9.
(5+4) = 9.
(6+3) = 9.
AZAM said:
1 decade ago
In two throws of a dice, n(S) = (6 x 6) = 36.
HOW IT DO
PLEASE EXPLAIN
HOW IT DO
PLEASE EXPLAIN
Harikannan said:
1 decade ago
How to find event that is (3, 4) (4, 5) (5, 4) (6, 3) please explain.
Chethan said:
9 years ago
Why they took n(E)/n(S)? In some other problem, they took n(S)/n(E).
Yallaling Dashavant said:
9 years ago
Sum 9 means (1,8)(2,7)(3,6)(4,5)(5,4)(6 3)(7,2).
Means 8/36 = 2/9.
Means 8/36 = 2/9.
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