median
don steward
mathematics teaching 10 ~ 16
Friday, 7 October 2011
primes 11
find all the prime numbers between
155 and 215
and add them up
note that:
161 = 7 x 23
169 = 13 x 13
187 = 11 x 17
203 = 7 x 29
209 = 11 x 19
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