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" 2.Prove that "^(9)P(3)+3times^(9)P(2)=...

" 2.Prove that "^(9)P_(3)+3times^(9)P_(2)=^(10)P_(3)

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Prove that ""^(9)P_(3)+3xx""^(9)P_(2)=""^(10)P_(3).

"is"^(10)P_(3)= ""^(9)P_(2)+3""^(9)P_(3) ?.

Prove that : ^10P_3= "^9P_3+3^9P_2 .

If .^(9)P_(5)+5.^(9)P_(4)=^(10)P_(r) , find r.

Prove that P(10,3)=P( 9,3) +3P ( 9,2)

Prove that ^10P_3=^9P_3+3.^9P_2

Prove that ^10P_3=^9P_3+3.^9P_2

Prove that (1)8P_(3)=7P_(3)+3.7P_(2) and (2)9P_(4)+4.9P_(4)=10P_(4)

Prove that : (i) ""^(n)P_(n)=2""^(n)P_(n-2) (ii) ""^(10)P_(3)=""^(9)P_(3)+3""^(9)P_(2) .

Evaluate the following: (i) .^(9)P_(3) (ii) .^(10)P_(2) (iii) .^(12)P_(4)