Jawab: a. Banyaknya permutasi 2 unsur dan 3 unsur 3 3! 3! 3 × 2 × 1 = = = = 6 2 (3 − 2)! 1! 1 b. Banyaknya permutasi 3 unsur dan 3 unsur 3! 3! 3 × 2 × 1 3 = = = = 6 3 (3 − 3)! 0! 1 xv