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# Six cards numbered from 1 to 6 are placed in an empty bowl.

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Manager
Joined: 11 Jan 2007
Posts: 196
Location: Bangkok
Followers: 1

Kudos [?]: 72 [0], given: 0

Six cards numbered from 1 to 6 are placed in an empty bowl. [#permalink]

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28 Jul 2007, 09:51
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

5. Six cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into the bowl; then a second card is drawn. If the cards are drawn at random and if the sum of the numbers on the cards is 8, what is the probability that one of the two cards drawn is numbered 5 ?
A.1/6
B.1/5
C.1/3
D.2/5
E.2/3
_________________

cool

Manager
Joined: 08 Jul 2007
Posts: 173
Followers: 1

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

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28 Jul 2007, 10:31
I get D.

There are only 5 ways to get a sum of 8:

2 6
6 2
3 5
5 3
4 4

Two of these ways have 5's in them. So 2/5 probability.
Intern
Joined: 26 Aug 2006
Posts: 25
Followers: 0

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

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28 Jul 2007, 11:27
2/5.

The sum of the numbers on the cards is 8.
(2,6)
(3,5)
(4,4)
(5,3)
(6,2)======5

One of the two cards drawn is numbered 5.
(3,5)
(5,3)======2

Hence, No. of favorable outcomes/Total Outcomes = 2/5.

Sunil
28 Jul 2007, 11:27
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# Six cards numbered from 1 to 6 are placed in an empty bowl.

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