Write an arithematic sequence with 60 as the sum of first 3 terms?
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Step-by-step explanation:
The sum of an arithmetic series is found by multiplying the number of terms times the average of the first and last terms. Formula: or. Example: 3 + 7 + 11 + 15 + ··· + 99 has a1 = 3 and d = 4.
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