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3 years ago

6

In an arithmetic sequence the sum of the first six odd-numbered terms (a1,a3,a5,a7,a9 and a11) is 60. find the sum of the first

eleven terms.

1 answer:

alexandr1967 [171]3 years ago

8 0

Answer:

Im so sorry!

Step-by-step explanation:

>:(

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