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Verified answer
R = U2 / U1 = 10 /5 = 2Un = ar^n-1
U7
=> 5(2)^7-1
=> 5(2)^6
=> 5*64
=> 320
Verified answer
Deret Geometri.r = 40 / 20 = 2
Un = arⁿ⁻¹
U₇ = 5(2)⁷⁻¹
= 5(64) = 320