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cloaked_vessel
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 19:51
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A diagram has exactly 2 black dots and 1 green dot for every two red dots. There are no dots of any other color in the diagram. Which of the following could be the number of dots in the diagram?

A 3
B 18
C 36
D 45
E 52



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Folaa3
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 19:58
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36. I will explain if it is correct.
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 20:06
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No, The OA is D.

I don't agree with the solution, though...
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cloaked_vessel
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 20:20
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Can you give me a breakdown of the 45 dots? Because if we have 2 black, then we have 43 among the green and red.

But the rule for green and red is 1 green for every 2 red. I don't think you can break 43 that way.

For example, if you have 28 red, then you have 14 green. Sum=42

If you have 30red, then you have 15 green. Sum=45
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banerjeea_98
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 20:38
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"D"....total has to be a multiple of 5, only 45 is a multiple....as the ratio of dots are 2:1:2....i.e. 2/5 and 1/5 and 2/5...as no of dots is an integer, total has to be multiple of 5
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 20:44
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banerjeea_98
"D"....total has to be a multiple of 5, only 45 is a multiple....as the ratio of dots are 2:1:2....i.e. 2/5 and 1/5 and 2/5...as no of dots is an integer, total has to be multiple of 5
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but there are only 2 black dots, so how can we divide the remaining 43 2:1?
I first thought it would be a multiple of 5, but considering there are 2 black dots, i recalculated
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banerjeea_98
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 20:59
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Folaa3
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"D"....total has to be a multiple of 5, only 45 is a multiple....as the ratio of dots are 2:1:2....i.e. 2/5 and 1/5 and 2/5...as no of dots is an integer, total has to be multiple of 5

but there are only 2 black dots, so how can we divide the remaining 43 2:1?
I first thought it would be a multiple of 5, but considering there are 2 black dots, i recalculated
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No there are not only 2 black dots.....stem says "there are exactly 2 black dots and 1 green dots for every 2 red dot"...that doesn't mean that there r only 2 black dots...I think guess misread the ques. :-D
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ywilfred
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 21:37
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D - 45. The answer should be a multiple of 5 since for every 2 red dots, you have 2 black dots and 1 green dot
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MA
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A diagram has exactly 2 black dots and 1 green dot for every 30 Mar 2005, 23:47
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yes it should be D. 45
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maneeshkumar
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A diagram has exactly 2 black dots and 1 green dot for every 31 Mar 2005, 01:59
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D - 45.
It has to be multiple of 5.
I guess this is one of the simple question they put in between the tough ones.
regards,
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Antmavel
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A diagram has exactly 2 black dots and 1 green dot for every 31 Mar 2005, 06:36
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D too
multiple of 5
anyway, the numbers are not too high so normally you can even double check in this kind of question
18R-> 18B + 9G = 45 total



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