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Grade 11Algebra

Is 201164 + 64 a prime or composite ?Please justify.

Profile image of bhanu p
15 Years agoGrade 11
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1 Answer

Profile image of aditya ##
15 Years ago

obviously it is! becos 201164  ends with units digit 1 & this on addition with 64 gives units digit 5 hence it is divisible by 5