April 2019 1 7 Report
Diketahui barisan bilangan bulat 3, a, b, dan 18.
tiga bilangan pertama membentuk barisan geometri dan tiga bilangan terakhir membentuk barisan aritmatika. berapakah nilai a + b?

a. 4
b. 8
c. 12
d. 18

tlong d jwb yaaa plisss bsok d kmpull mksih
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