1.

The coefficients of the ( r – 1) th , r th and ( r + 1) th terms in the expansion of ( x + 1) n are in the ratio 1:3:5. Find n and r .

Answer» The coefficients of the ( r – 1) th , r th and ( r + 1) th terms in the expansion of ( x + 1) n are in the ratio 1:3:5. Find n and r .


Discussion

No Comment Found