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kevincan
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The second full moon in a calendar month is often called a 19 Jul 2006, 07:21
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The second full moon in a calendar month is often called a blue moon. If full moons occur every 29.5 days. what is the maximum number of blue moons that could occur in a calendar year?

(A) one (B) two (C) three (D) four (E) more than four



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arunsanand
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The second full moon in a calendar month is often called a 19 Jul 2006, 08:18
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I think the answer is two, and the only way this happens is when there is no full moon in the month of Feb. In this case both Jan and March will have two full moons, hence 2 blue moons in the year.
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MA
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The second full moon in a calendar month is often called a 19 Jul 2006, 08:35
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B. found 2. one in jan another in march if first full mon occur on 1st jan.

its very tedious calculations and took more than 5 minuets.
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Dilshod
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The second full moon in a calendar month is often called a 19 Jul 2006, 08:49
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i have always had conceptual problems with such questions?

if february in certain year has 28 days, the max# of BM - 2
but if in a given year february has 29, the max# of BM - 1

can anybody explain, which one should choose? and most important WHY?
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The second full moon in a calendar month is often called a 19 Jul 2006, 10:43
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I don’t see a problem even if Feb has 29 days. If the second full moon in Jan occurs on 31st, then the next one would be due only on 1st of March, which gives two blue moons.

Dilshod
i have always had conceptual problems with such questions?

if february in certain year has 28 days, the max# of BM - 2
but if in a given year february has 29, the max# of BM - 1

can anybody explain, which one should choose? and most important WHY?
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The second full moon in a calendar month is often called a 19 Jul 2006, 12:03
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arunsanand
I don’t see a problem even if Feb has 29 days. If the second full moon in Jan occurs on 31st, then the next one would be due only on 1st of March, which gives two blue moons.

Dilshod
i have always had conceptual problems with such questions?

if february in certain year has 28 days, the max# of BM - 2
but if in a given year february has 29, the max# of BM - 1

can anybody explain, which one should choose? and most important WHY?
Show more

ignore my posts:)

kevincan, please keep posting questions
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The second full moon in a calendar month is often called a 19 Jul 2006, 14:50
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I'll do my best, but it ain't easy to think up questions to stump this sharp bunch. I've posted about 60 so far...
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jaynayak
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The second full moon in a calendar month is often called a 20 Jul 2006, 04:10
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Getting 2

If we take first full moon on Jan1st. first blue moon will be on Jan second will be on March.
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sjumani
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The second full moon in a calendar month is often called a 20 Jul 2006, 08:12
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Kevincan and Jay,

Can you please take me through the reasoning in a little detail - I seem to miss the technique.

Thanks

SJ
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hawk
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The second full moon in a calendar month is often called a 20 Jul 2006, 10:00
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When should I assume the first blue moon occured, based on that assumption I believe the numbers might change.
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kevincan
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The second full moon in a calendar month is often called a 20 Jul 2006, 13:13
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hawk
When should I assume the first blue moon occured, based on that assumption I believe the numbers might change.
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You aren't asked to assume anything. You are asked for the maximum that could occur in a calendar year. So OA=B
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shampoo
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The second full moon in a calendar month is often called a 20 Jul 2006, 14:06
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Got 2, then just gave-up, very tedius question indeed.
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kevincan
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The second full moon in a calendar month is often called a 20 Jul 2006, 14:14
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It shouldn't be tedious at all! How did you approach it?



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