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Question Number 166448 by SANOGO last updated on 20/Feb/22

montrer q  ∀nεN  n^2 +n est divisible par 30

montrerqnϵNn2+nestdivisiblepar30

Commented by MJS_new last updated on 20/Feb/22

it′s not true

itsnottrue

Commented by malwan last updated on 20/Feb/22

n^3 −n est divisible par 3

n3nestdivisiblepar3

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