Give an example of a statement P(n) which is true for all n ≥ 4 but P(1), P(2) and P(3) are not true. Justify your answer

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Consider the statement P(n): 3n < n!

For n = 1, 3 x 1 < 1!, which is not true

For n = 2, 3 x 2 < 2!, which is not true

For n = 3, 3 x 3 < 3!, which is not true

For n = 4, 3 x 4 < 4!, which is true

For n = 5, 3 x 5 < 5!, which is true

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