Question:
Evaluate (i) 8! (ii) 4! - 3!
Evaluate (i) 8! (ii) 4! - 3!
Updated On: Jan 27, 2026
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Solution and Explanation
(i) 8! = 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 = 40320
(ii) 4! = 1 x 2 x 3 x 4 = 24
3! = 1 x 2 x 3 = 6
∴4! - 3! = 24 - 6 = 18
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Permutations and Combinations
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Permutation is the method or the act of arranging members of a set into an order or a sequence.
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- A permutation is used in many events of daily life. It is used for a list of data where the data order matters.
Combination:
Combination is the method of forming subsets by selecting data from a larger set in a way that the selection order does not matter.
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