SOLUTION: find n if p(n,4)=12p(n,2)
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Question 1118297: find n if p(n,4)=12p(n,2)
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!
Ans:
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Workout:
Divide both sides by n!:
Re-arrange to:
Logically, the left hand side needs to be
which implies n-4 = 2 ==> n=6
———————
Check: P(6,4) = 360
12P(6,2) = 12*30 = 360
———————
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