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Verified answer
R = 2n = ( 2010 - 1960 )/10
n = 50/10
n = 5
Sn = ar( n-1)
3,2 juta = a.2(5-1)
3,2 juta = a.2⁴
a = 3,2 juta ÷ 2⁴
a = 3,2 juta ÷ 16
a = 0,2 juta
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