08-02-2016
Mathematics

contestada

Tim is hiding between two consecutive pages in his giant book. One of the pages is numbered with the product of 4 different primes. The other page could be
A) 31
B) 121
C) 129
D) 211

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08-02-2016

4 different primes
use the smaler ones so easier to work with
4 one digit primes are
2,3,5,7
so the product of 4 different primes (product=multiplication of)
multiply them toghetr
2 times 3 times 5 time s 7=6 times 5 times 7=30 times 7=210
so the other page is 1 more or less
we see that 211 is one away from 210 so that is the asnwer

D is the asnwer

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