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# If two numbers are randomly selected from set (1, 2, 3, 4,

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CEO
Joined: 21 Jan 2007
Posts: 2734

Kudos [?]: 1049 [0], given: 4

Location: New York City
If two numbers are randomly selected from set (1, 2, 3, 4, [#permalink]

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23 Oct 2007, 12:32
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If two numbers are randomly selected from set (1, 2, 3, 4, 5), what is the probability that the sum of the two numbers is biger than 4?

3/5
7/10
4/5
9/10
19/20

Kudos [?]: 1049 [0], given: 4

Senior Manager
Joined: 11 Sep 2005
Posts: 313

Kudos [?]: 373 [0], given: 0

Re: Challenge - Sum Probabilities [#permalink]

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23 Oct 2007, 12:58
bmwhype2 wrote:
If two numbers are randomly selected from set (1, 2, 3, 4, 5), what is the probability that the sum of the two numbers is biger than 4?

3/5
7/10
4/5
9/10
19/20

C - 4/5

1+4/1+5/2+3/2+4/2+5/3+4/3+5/4+5

So, 8/(5C2) = 4/5

Kudos [?]: 373 [0], given: 0

Re: Challenge - Sum Probabilities   [#permalink] 23 Oct 2007, 12:58
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