Only the square roots are open because they have an odd number of factors not like the rest have an even # of factors. There are 31 perfect squares in 1000 because 31^2=961 which means 31 lockers open. The lockers that are open are: 1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400,441,484,529,576,625,
676,729,784,841,900,961
Friday, October 2, 2009
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aweasome story.
ReplyDeleteit was very suspensful.
my favorite part was the one when they crash.
very dramatic.
i like it.