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Re: Brain TeasersMathIsFun has a similar puzzle: One and a Half Hens Last edited by JaneFairfax (20080528 02:49:49) #152 20080528 00:41:55
Re: Brain TeasersI am really sorry, JaneFairfax! Character is who you are when no one is looking. #153 20080528 10:05:25#154 20080528 16:43:57
Re: Brain TeasersAnswer to #69: Character is who you are when no one is looking. #155 20080529 05:28:33#156 20080529 19:52:14
Re: Brain TeasersYes, it is, JaneFairfax! I didn't notice that! Character is who you are when no one is looking. #157 20080529 21:16:21
Re: Brain TeasersThe vertices of the square are A, B, C, and D. The vertices of the equilateral triangle are B, P, and C. Hence, one of the sides of the equilateral triangle is BC. The square also has BC as one of its sides. Character is who you are when no one is looking. #158 20080529 21:55:43
Re: Brain Teasers#71. Consider the set S = {1, 2, 3, ...., 1000}. How many Arithmetic Progressions can be formed from the elements of S that start with 1 and end with 1000 and have at least 3 elements? Character is who you are when no one is looking. #159 20080529 22:01:03
Re: Brain Teasers
"There is not a difference between an inlaw and an outlaw, except maybe that an outlaw is wanted" Nisi Quam Primum, Nequequam #160 20080529 22:21:09#161 20080530 00:28:45
Re: Brain TeasersAnswers to #70, and #71: Character is who you are when no one is looking. #162 20080530 00:58:55
Re: Brain Teasers#72. Eric wrote down all the possible three digit numbers with distinct digits on a blackboard. Brian erased all the numbers on the blackboard whose first and last digits were either both odd or both even. How many numbers are left on the blackboard? Character is who you are when no one is looking. #163 20080530 01:26:38#164 20080530 01:32:21
Re: Brain TeasersNo, they wouldn't be three digit numbers then! Character is who you are when no one is looking. #165 20080530 01:44:51
Re: Brain Teasers
Why did the vector cross the road? It wanted to be normal. #166 20080530 08:44:03
Re: Brain Teasers
I wasn’t sure if you meant numbers as in integers or numbers as in numeric expressions. For example, 012 may be a twodigit integer, but as a numeric expression, it has three digits. (It could be the combination to a lock, say.) I just want to be sure which one (integers or numeric expressions) you meant. Last edited by JaneFairfax (20080530 09:52:51) #167 20080530 09:03:42
Re: Brain TeasersJane, you've worked out the amount of numbers that got erased. Why did the vector cross the road? It wanted to be normal. #168 20080530 09:56:24
Re: Brain TeasersLast edited by JaneFairfax (20080530 19:43:03) #169 20080530 16:00:09
Re: Brain TeasersAnswer to #72: Character is who you are when no one is looking. #170 20081202 02:21:13
Re: Brain Teasers#73. If the persons A and B have incomes in the ratio 7 : 5 and Character is who you are when no one is looking. #171 20081216 01:06:11
Re: Brain Teasers#76. 3 men and 5 boys can do nineteentwentieth of a piece of work in 3 days. 4 men and 8 boys can do fourteenfifteenth of the same work in 2 days. In what time can a boy do the whole work? Character is who you are when no one is looking. #172 20081225 05:09:35#173 20081225 15:53:13
Re: Brain Teaserscareless25, Character is who you are when no one is looking. #174 20081229 00:52:52
Re: Brain Teasers#79. A side of a cube is √3. What is the maximum length of a stick it can contain? #81. A gives half his salary to his wife, half of the remaining salary to his son and onethird of what remains to his daughter. He is left with $500. What is his salary? Character is who you are when no one is looking. #175 20081229 01:03:02
Re: Brain TeasersComplete the series/Fill in the blank: Character is who you are when no one is looking. 