October 2018 1 89 Report
1) Jumlah 50 bilangan ganjil yang pertama adalah...
a. 1.250 b. 1.800 c. 2.500 d. 3.600
2) Jika rumus jumlah n suku pertama suatu deret aritmetika Sn = 3n^2 - n, besar suku ke-25 adalah...
a. 117 b. 122 c.140 d. 146

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