shazidrahamanshoyad
shazidrahamanshoyad shazidrahamanshoyad
  • 29-05-2020
  • Mathematics
contestada

Find the number of positive numbers less than 2020, which can be written as the sum of five consecutive positive numbers.

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Ultroid Ultroid
  • 29-05-2020

Integers*?

Let [tex]n[/tex] be the smallest of these five consecutive integers. Then the sum of the five consecutive integers is [tex]\frac{5(2n+4)}{2}=5n+10,[/tex] so we seek the largest positive integer [tex]n[/tex] such that [tex]5n+10<2020.[/tex] Solving this inequality, we find that [tex]n<402,[/tex] so there are [tex]\boxed{401}[/tex] such positive integers.

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