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= 2² × 7
Merah = 3 × 12
= 36
= 2² × 3²
Hitam = 44
= 2² × 11
Hijau = 52
= 2² × 13
FPB = 2²
= 4
Banyak kelereng menurut warna di dalam satu kantong..
Putih = 28 : 4
= 7
Merah = 36 : 4
= 9
Hitam = 44 : 4
= 11
Hijau = 52 : 4
= 13
Jumlah = 7 + 9 + 11 + 13
= 40
Jadi banyak kelereng pada setiap kantong adalah 40 (D).