swat246
swat246
09-08-2016
Mathematics
contestada
5^71+5^72+5^73
Is divided completly by 155 how
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caylus
caylus
09-08-2016
Hello,
(5^71+5^72+5^73)/155=5^71(1+5+25)/(5*31)
=5^71 * 31/(5*31)=5^70.
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