12!
= 12 × 11 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
= 132 × 90 × 56 × 30 × 12 × 2
= 11.880 × 1.680 × 24
= 19.958.400 × 24
= 479.001.600
9!
= 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
= 72 × 56 × 20 × 6 × 1
= 4.032 × 120 × 1
= 483.840 × 1
= 483.840
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Nomor 1
12!
= 12 × 11 × 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
= 132 × 90 × 56 × 30 × 12 × 2
= 11.880 × 1.680 × 24
= 19.958.400 × 24
= 479.001.600
Nomor 2
9!
= 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
= 72 × 56 × 20 × 6 × 1
= 4.032 × 120 × 1
= 483.840 × 1
= 483.840