A quick pair of questions.
(a) Who are 2B/37 better known as?
(b) Who 'composed' 91π/216000?
Source: GCHQ Puzzle book
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2$\begingroup$ Are we looking for a single answer or is it two separate questions? $\endgroup$– rhsquaredSep 14, 2018 at 8:04
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1$\begingroup$ It is two questions..... $\endgroup$– SimdSep 14, 2018 at 8:28
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10$\begingroup$ If they're not part of the same puzzle, they should probably be posted separately. $\endgroup$– 3D1T0RSep 14, 2018 at 16:19
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2 Answers
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2B/37 (base 16) = 43/55 (base 10) = 43*4/55*4(base 10) = 172/220 (base 10) = AC/DC (base 16)
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15$\begingroup$ So the real challenge is for the OP to accept both answers. $\endgroup$ Sep 14, 2018 at 12:47
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1$\begingroup$ @MrLister I can't even tell which answer was first any more! $\endgroup$– SimdSep 14, 2018 at 14:18
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5$\begingroup$ @Anush this answer was first by a little over a minute. You can see exact timestamps by hovering over the "Answered X hours ago" text. $\endgroup$ Sep 14, 2018 at 14:20
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1$\begingroup$ Is it weird that I'm bothered by the unnecessary conversion to base 10 and back? I mean, hex is just another format for representing integers... Then again, it does help make this answer a little more clear. +1 either way for the clever solution. $\endgroup$– anonSep 14, 2018 at 21:08
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For B)
It was John Cage
91 x (pi) / 216000 rad will give 4'33"
John composed the piece 4'33"
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2$\begingroup$ If I can, I will give a $50$ rep bounty to this question and award you that :) $\endgroup$– Mr PieSep 15, 2018 at 12:30
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1$\begingroup$ @user477343 Dude, you are such a nice person :) $\endgroup$– Kevin LSep 18, 2018 at 4:32
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$\begingroup$ Thank you! I don't mind about reputation, so I'm happy to give it away :) $\endgroup$– Mr PieSep 18, 2018 at 4:33
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$\begingroup$ Congratulations! $\boxed{\color{blue}{+100}}$ $\endgroup$– Mr PieSep 19, 2018 at 10:47