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# probability :ben loosing

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Manager
Joined: 03 Feb 2010
Posts: 68
Followers: 1

Kudos [?]: 47 [0], given: 4

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08 Apr 2010, 18:26
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If Ben were to lose the championship, Mike would be the winner with a probability of $$\frac{1}{4}$$ , and Rob - $$\frac{1}{3}$$ . If the probability of Ben being the winner is $$\frac{1}{7}$$ , what is the probability that either Mike or Rob will win the championship?

(A) $$\frac{1}{12}$$
(B) $$\frac{1}{7}$$
(C) $$\frac{1}{2}$$
(D) $$\frac{7}{12}$$
(E) $$\frac{6}{7}$$

[Reveal] Spoiler:
Ans : C

src : gmatclubmath test : M07
Senior Manager
Joined: 01 Feb 2010
Posts: 267
Followers: 1

Kudos [?]: 53 [0], given: 2

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08 Apr 2010, 21:19
sushma0805 wrote:
If Ben were to lose the championship, Mike would be the winner with a probability of , and Rob - . If the probability of Ben winning is , what is the probability that either Mike or Rob will win the championship (there can be only one winner)?

A. 1/12
B. 1/7
C. 1/2
D. 7/12
E. 6/7

[Reveal] Spoiler:
Ans : C

src : gmatclubmath test : M07

Probability numbers are missing.
Senior Manager
Joined: 07 Jan 2010
Posts: 250
Followers: 1

Kudos [?]: 8 [0], given: 16

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09 Apr 2010, 13:39
might be interesting to solve once we know the probabilities.
Senior Manager
Joined: 07 Jan 2010
Posts: 250
Followers: 1

Kudos [?]: 8 [0], given: 16

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09 Apr 2010, 13:58
discussed previously ...
here it is if-ben-were-to-lose-the-championship-m07q12-75695.html
Re: probability :ben loosing   [#permalink] 09 Apr 2010, 13:58
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