1.

Let l,m,n are the coefficients of x^5 in (1+2x+3x^2+…..)^(-3//2), (1+x+x^2 +x^3+….)^2, (1+x)^5 Respectively then :

Answer»

`L LT m lt N `
`m lt n lt l`
`n lt l lt m `
`l lt n lt m`

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