Any of the ways we can arrange things, where the order is important.

Example: You want to visit the homes of three friends ("a"), ("b") and ("c"), but haven't decided in what order. What choices do you have?

Answer: {a,b,c} {a,c,b} {b,a,c} {b,c,a} {c,a,b} {c,b,a}

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Navneet Singh 4 years, 8 months ago

All formula chpater 3

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