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Class act (Posted on 2002-05-02) Difficulty: 3 of 5
31 students in a row were numbered 1,2,...,31 in order. The teacher wrote down a number on the blackboard.

Student 1 said "the number is divisible by 1",
Student 2 said "the number is divisible by 2",
and so forth...until
Student 31 said "the number is divisible by 31".

The teacher remarked: "Very well pups, but two of you gave a wrong statement, and those two sit besides each other". Determine those two.

See The Solution Submitted by theBal    
Rating: 3.5000 (10 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionanswerDej Mar2012-04-23 04:47:26
AnswerPraneeth2007-07-31 13:11:42
answerK Sengupta2007-03-08 12:30:16
It's coolsragen2004-11-30 06:21:33
SolutionToo Easy???bob9092004-09-07 16:06:37
SolutionWho knowsbob9092004-09-07 15:57:03
same as prev - approachvectorboy2004-06-29 14:33:17
re: Really not that hardnikki2003-06-01 06:54:38
Really not that hardBrian Smith2003-05-15 04:42:49
Some ThoughtsEasily doneGamer2003-04-12 13:34:27
Disregard Previous Postjude2003-02-27 07:39:03
Good Ideajude2003-02-27 07:36:57
No nitpicking!levik2002-05-08 20:29:44
Not enough infonarcoleptic2002-05-08 13:31:52
My methodlevik2002-05-03 02:18:36
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