Binomial From Fitzpatrick (1 Viewer)

[Yell0w]

This is question 50 on page 209 from New Senior Maths : 3Unit Course.

50. By considering the coefficient of x^r in the geometric progression.
1 + (1 + x) + (1 + x)^2 + .... + (1 + x)^n

Prove that nCr + (n-1)Cr + (n-2)Cr + ... + rCr = (n+1)C(r+1)

The C acutally represent the Combination symbol. sorry, I didn't know how to use the latex equation thing.

Thanks.

 

[kcqn93]

Ask Mr Pham lol

 

[Drongoski]

 

[Yell0w]

Thanks Alot, Rep++ =]