What does Cheryl tell Albert?, The month, The day, What does Cheryl tell Bernard?, The month, The day, If Cheryl's birthday had been on June 18th or May 19th, Bernard would have known immediately. Why?, Because he knows the day and there is only one 18th and 19th, Because he knows the day and there are many 18th and 19th, Because he knows the month and there is only one July, Albert knows those two dates aren't possible (he knows Bernard doesn't know when Cheryl's birthday is). He knows this because the month he was told was different. If we remove these two months as possibilities, what months remain?, July & June, May & June, July & August, If you remove the same dates in July and August with the same day. The possible dates are:, July 16th, August 15th & August 17th, June 17th, August 15th & August 17th, Albert then says he knows when her Birthday is, but he only knows the month. So the answer is:, July 16th, August 15th, August 17th
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logical problem B2.3
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Marialeviolin
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