(i) Treat 28 as unit: 2×4! = 48; (ii) total 5! − 48 = 72.
Answer: 48; 72
Accedmychevron_right11thchevron_rightmathchevron_rightPermutations And Combinationschevron_rightExercise 7.2
(i) Treat 28 as unit: 2×4! = 48; (ii) total 5! − 48 = 72.
Answer: 48; 72