# Who are 2B/37 better known as?

A quick pair of questions.

(a) Who are 2B/37 better known as?
(b) Who 'composed' 91π/216000?


Source: GCHQ Puzzle book

• Are we looking for a single answer or is it two separate questions? Sep 14, 2018 at 8:04
• It is two questions.....
– Simd
Sep 14, 2018 at 8:28
• If they're not part of the same puzzle, they should probably be posted separately. Sep 14, 2018 at 16:19

2B/37 (base 16) = 43/55 (base 10) = 43*4/55*4(base 10) = 172/220 (base 10) = AC/DC (base 16)

• I think it is just 2 separate questions :D Sep 14, 2018 at 8:58
• So the real challenge is for the OP to accept both answers. Sep 14, 2018 at 12:47
• @MrLister I can't even tell which answer was first any more!
– Simd
Sep 14, 2018 at 14:18
• @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. Sep 14, 2018 at 14:20
• 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.
– anon
Sep 14, 2018 at 21:08

For B)

It was John Cage
91 x (pi) / 216000 rad will give 4'33"
John composed the piece 4'33"

• If I can, I will give a $50$ rep bounty to this question and award you that :) Sep 15, 2018 at 12:30
• There we go :P ${}$ Sep 18, 2018 at 4:28
• @user477343 Dude, you are such a nice person :) Sep 18, 2018 at 4:32
• Thank you! I don't mind about reputation, so I'm happy to give it away :) Sep 18, 2018 at 4:33
• Congratulations! $\boxed{\color{blue}{+100}}$ Sep 19, 2018 at 10:47