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## Answers

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

wait, i aadd ba lahat o bibilangin?

pag inadd 240

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**Arithmetic sequence {2, 4, 6 ..., 30}**

**Difference between any two consecutive even numbers: 2**

**First term, = 2**

**Last term, = 30**

**Number of terms: Unknown**

**Hanapin ang number of terms/items:**

**Gamitin ang mga impormasyon sa itaas:**

**30 = 2 + (n-1)(2)**

**30 = 2 + 2n - 2**

**30 = 2n + 2 - 2**

**30 = 2n**

**2n/2 = 30/2**

**n = 15****Formula ng kabuuan or sum ng arithmetic sequence:**

**= 240**

__Ang sum ng mga even numbers na hindi lalagpas sa 30 ay 240.__**Kung ang hihingin ay sum o kabuuan ng numbers, even numbers o odd numbers na aabot sa 100 o mahigit pa, mas makabubuting gamitin ang formula ng arithmetic sequence at sum of the series.**

**Sa ganitong paraan, maiiwasan ang paglista ng maraming numero bago kunin ang sum o kabuuan ng mga ito.**