Question

Find n if ⁶P₂ = n ⁶C₂

Answer 1

⁶P₂ = n ⁶C₂

∴ `(6!)/((6 - 2)!) = "n" (6!)/(2!(6 - 2)!)`

∴ `(6!)/(4!) = "n"(6!)/(2!4!)`

∴ n = 2! 

= 2 × 1

= 2