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Cheryl's Birthday
Posted: Tue Apr 14, 2015 11:38 am
by spot
Cheryl's Birthday: Singapore's maths puzzle baffles world - BBC News
It only counts if you do it in your head and get it right. Be warned, the answer appears toward the end of the article.
Cheryl's Birthday
Posted: Tue Apr 14, 2015 11:46 am
by FourPart
I don't even understand the answer, and I'm usually pretty good at logic puzzles.
Cheryl's Birthday
Posted: Tue Apr 14, 2015 11:58 am
by spot
It's one of the ten dates she hands out at the beginning.
I could post a rot13'd spoiler if that helps:
Jura Nyoreg fnlf "V xabj Oreaneq qbrfa'g xabj", ur naabhaprf gb rirelbar gung uvf zbagu vfa'g Znl be Whar. Vs vg jrer Znl, Oreaneq zvtug unir orra gbyq gur 19gu va juvpu pnfr Oreaneq jbhyq xabj. Vs vg jrer Whar, Oreaneq zvtug unir orra gbyq gur 18gu va juvpu pnfr Oreaneq jbhyq xabj. Nyoreg xabjf sbe n snpg gung Oreaneq pna'g lrg xabj, fb gur zbagu pna'g or Znl be Whar.
Fb Oreaneq abj xabjf vg'f rvgure Whyl be Nhthfg. Ur fnlf ur abj qbrf xabj, gubhtu ur qvqa'g orsber.
Vs Oreaneq ubyqf gur 14gu vg pbhyq or rvgure Whyl be Nhthfg fb ur pna'g xabj juvpu. Orpnhfr ur abj qbrf xabj gur shyy oveguqnl, vg pna'g or gur 14gu.
Vs Nyoreg xarj vg jrer Nhthfg gura Oreaneq pbhyq ubyq rvgure gur 15gu be 17gu va juvpu pnfr Nyoreg jbhyqa'g raq hc xabjvat gur qngr ng gur raq. Fb vg pna'g or Nhthfg.
Fb Nyoreg ubyqf Whyl, naq gur bayl qngr yrsg vf gur 16gu.
Cheryl's Birthday
Posted: Sat Apr 18, 2015 1:34 am
by Bryn Mawr
I'd say that was an easy one but then, I've not checked the answer.
I'd say it's the 16th July. If I'm wrong then there's egg on my face, if I'm right I'll happily explain the logic.