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Rataan terkecil: 10,10,40,40,60
Rk = 10+10+40+40+60/5 = 32
Rataan terbesar: 10,40,40,60,60
Rb = 10+40+40+60+60/5 = 42
Rk<X<Rb
32<X<42
jawabannya : B