Question

Quantos múltiplos de 3 existem entre 10 e 200 ?A) 63B) 65C)70D)80E)85

Answer 1

Bom Dia!

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Vamos aplicar (P.A).

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Dados;

a1→ 12

An → 198

R → 3

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An = a1+(n-1)·r

198 = 12+(n-1)·3

198 = 12+3n-3

198-3n = 12-3

198-3n = 9

-3n = 9-198

-3n = -189 (-1)

3n = 189

n = 189/3

n = 63

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Resposta → Alternativa(B)

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Att;Guilherme Lima