Guest Posted July 24, 2011 Report Share Posted July 24, 2011 The students of a class are standing in a circle. The 7th boy is straight opposite to the 18th boy. How many students are there in the class. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted July 25, 2011 Report Share Posted July 25, 2011 Kept thinking someone would reply 22 - 2 short of a 24 hour clock Quote Link to comment Share on other sites More sharing options...
0 Guest Posted July 25, 2011 Report Share Posted July 25, 2011 i guess 22 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted July 25, 2011 Report Share Posted July 25, 2011 (edited) If the class is all boys, and they are evenly spaced, then the answer is 22. There could be 2 girls, opposite each other, that would then make the answer 24. The 7th boy would always be the seventh boy no matter how many girls. So long as there are an equal number of girls in the semicircles between the 7th and 18 boys, they remain across from each other. Also, to argue semantics: There could be any number of students greater that 22 if the students aren't evenly spaced. Start with 22 evenly spaced boys in a circle. Now add however many you want between the 18th boy and the 1st boy. So long as the 7th and 18th don't move, they are still 'straight opposite'. Turning it into a word play sort of semantic argument, any number of classmates could be literally 'in' a defined circle instead of side by side 'forming' a circle. Edited July 25, 2011 by chilepepper Quote Link to comment Share on other sites More sharing options...
0 Guest Posted July 25, 2011 Report Share Posted July 25, 2011 22 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted July 25, 2011 Report Share Posted July 25, 2011 By specifying "boys" rather than "students" in the circle the answer would have been 22. But as t stands the number is indeterminate because there could be any number of female students. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted July 26, 2011 Report Share Posted July 26, 2011 heres a picture of my answer... hope it helps! Quote Link to comment Share on other sites More sharing options...
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The students of a class are standing in a circle.
The 7th boy is straight opposite to the 18th boy.
How many students are there in the class.
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