March 2019 1 29 Report
Tiga buah bilangan a+2,a-1,2a-10 membentuk barisan aritmatika,jika suku tengah ditambah -1,maka barisan tersebut adalah

a. 2,4,6
b. 2,4,8
c. 2,5,8
d. 8,4,2
e. 8,5,2
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