thesolar65
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- Jul 3, 2012
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Singapore Cheryl’s Birthday: Impossible Math Question Is Tearing Apart The Internet
“Albert and Bernard just met Cheryl. ‘When’s your birthday?’ Albert asked Cheryl.
Cheryl thought a second and said, ‘I’m not going to tell you, but I’ll give you some clues.’ She wrote down a list of 10 dates:
May 15 — May 16 — May 19
June 17 — June 18
July 14 — July 16
August 14 — August 15 — August 17
‘My birthday is one of these,’ she said.
Then Cheryl whispered in Albert’s ear the month — and only the month — of her birthday. To Bernard, she whispered the day, and only the day.
‘Can you figure it out now?’ she asked Albert.
Albert: I don’t know when your birthday is, but I know Bernard doesn’t know, either.
Bernard: I didn’t know originally, but now I do.
Albert: Well, now I know, too!
When is Cheryl’s birthday?”
Answer : July 16
But the way to answer just went above my head!!
@levina @Skull and Bones @Indo-guy @janon
Singapore maths question: How to solve the problem for school children that has stumped the world - The Times of India
Singapore Cheryl’s Birthday: Impossible Math Question Is Tearing Apart The Internet
“Albert and Bernard just met Cheryl. ‘When’s your birthday?’ Albert asked Cheryl.
Cheryl thought a second and said, ‘I’m not going to tell you, but I’ll give you some clues.’ She wrote down a list of 10 dates:
May 15 — May 16 — May 19
June 17 — June 18
July 14 — July 16
August 14 — August 15 — August 17
‘My birthday is one of these,’ she said.
Then Cheryl whispered in Albert’s ear the month — and only the month — of her birthday. To Bernard, she whispered the day, and only the day.
‘Can you figure it out now?’ she asked Albert.
Albert: I don’t know when your birthday is, but I know Bernard doesn’t know, either.
Bernard: I didn’t know originally, but now I do.
Albert: Well, now I know, too!
When is Cheryl’s birthday?”
Answer : July 16
But the way to answer just went above my head!!
@levina @Skull and Bones @Indo-guy @janon
Singapore maths question: How to solve the problem for school children that has stumped the world - The Times of India
Singapore Cheryl’s Birthday: Impossible Math Question Is Tearing Apart The Internet
no way you a teacher?
