February 2019 0 50 Report
Dari 7 kali ulangan ips seorang anak mempunyai nilai rata-rata 7. jika tiga ulangan berikutnya ia mendapat nilai 4, 6, 7 maka nilai mean dari 10 kali ulangan anak tersebut adalah.....

A. 6
B. 6,6
C. 6,7
D. 7,6
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