jarmijo1875 jarmijo1875

02-09-2020
Mathematics

contestada

Which number completes the series: 1, 3, 6, 10, 15, ???

Respuesta :

Tootie1993 Tootie1993

02-09-2020

Answer:

21

best of luck!

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flikitrix flikitrix

02-09-2020

Answer:

21

Step-by-step explanation:

1 + 2 = 3

3 + 3 = 6

6 + 4 = 10

10 + 5 = 15

15 + 6 = 21

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