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U4=ar³=24
U1=ar°=3
------------------ : (dibagi)
r³=8
r=³√8
r=2
a=3
U5=ar⁴=3.2⁴=3.16=48
Jadi suku ke 5 adalah 48
u1 = a = 3
u4 = 3r ^ (4-1) = 3r^3 = 24
r^3 = 24÷3 = 8
r = 2
u5 = 3r^(5-1) = 3r^4 = 3*2^4 = 3* 16 =48