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Schisoares123
@Schisoares123
December 2019
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Quantos números pares há entre 13 e 241
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Maths2
Não sei o correto mas acho que é 149
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DanielS6
PA (14, 16, 18... 240)
a1 = 14
r = 2
an = a1 + (n - 1)r
240 = 14 + (n - 1) 2
240 = 14 + 2n - 2
240 - 14 + 2 = 2n
228 = 2n
228/2 = n
114 = n
Resposta:
São 114 números pares entre 13 e 241.
1 votes
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a1 = 14
r = 2
an = a1 + (n - 1)r
240 = 14 + (n - 1) 2
240 = 14 + 2n - 2
240 - 14 + 2 = 2n
228 = 2n
228/2 = n
114 = n
Resposta: São 114 números pares entre 13 e 241.