February 2019 1 107 Report
1.) Diketahui suatu barisan geometri dengan suku ke -3 =20 dan suku ke -5= 80. suku ke -7 barisan tsb adalah...
a. 160
b. 320
c. 348
d. 420
e. 640

2.) Simpangan baku dari data 5,5,6,6,6,7,8 dan 9 adalah...

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