Source GMATClub
A box contains 10 tablets of medicine A and 15 tablets of medicine B. If tablets are taken from the box at random, what is the least possible that ensures that at least two tablets of each kind are among the extracted?
12
15
17
19
21
OA C
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Tablets
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maihuna
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taken 15 the worst case all from source B so 2 more will result in each source 2.mmslf75 wrote:Source GMATClub
A box contains 10 tablets of medicine A and 15 tablets of medicine B. If tablets are taken from the box at random, what is the least possible that ensures that at least two tablets of each kind are among the extracted?
12
15
17
19
21
OA C
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mmslf75
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Cant it be 12 ??maihuna wrote:taken 15 the worst case all from source B so 2 more will result in each source 2.mmslf75 wrote:Source GMATClub
A box contains 10 tablets of medicine A and 15 tablets of medicine B. If tablets are taken from the box at random, what is the least possible that ensures that at least two tablets of each kind are among the extracted?
12
15
17
19
21
OA C
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gmat_basher
- Newbie | Next Rank: 10 Posts
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- Joined: Tue Dec 15, 2009 3:10 pm
Tablet - A = 10
Tablet - B = 15,
If you take 12, There is a possiblitity that all 12 can be from Tablet-B.
Tablet - B = 15,
If you take 12, There is a possiblitity that all 12 can be from Tablet-B.
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Jeff@TargetTestPrep
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Let's consider the worst possible scenario: It's possible to take out 15 tablets and all of them are medicine B. In this case, we only take out one kind of medicine instead of both. Therefore, we need to take out at least 15 + 2 = 17 tablets (all 15 of medicine B and 2 of medicine A) to ensure that at least two tablets of each kind are extracted.mmslf75 wrote:Source GMATClub
A box contains 10 tablets of medicine A and 15 tablets of medicine B. If tablets are taken from the box at random, what is the least possible that ensures that at least two tablets of each kind are among the extracted?
12
15
17
19
21
Answer: C
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