Naekwon30 Naekwon30

07-07-2016
Mathematics

Answered

Please help me compute 5 P2
a. 20b. 10c. 3d. 2.5

Verified Answer :

07-07-2016

Formula: \(_nP_r= \dfrac{n!}{(n-r)!}\)\)

n = 5 , r = 2

\(_5P_2=\dfrac{5!}{(5-2)=3!}\)\)

\(\(\dfrac{5!=5*4*3*2*1}{3!=3*2*1}=\dfrac{5*4}{1}=5*4=20\)\)

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