n का मान ज्ञात कीजिए , यदि -
(i) ` (n+2)! =12*n!`
(ii) ` (n+2)! = 60*(n-1)!`
(iii) ` (n+3)! = 2550(n+1)!`
(iv) `(n-2)! = 132 *(n-4)!`

Answer

`(i) n = 2" "(ii) n = 3 " "(iii) n = 48" "(iv) n = 14`