a problem

[托斯卡尼艷陽下]

10
Sigma C(6+m,m) = ?
m=0

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Post by 托斯卡尼艷陽下
10
Sigma C(6+m,m) = ?
m=0

= C(6,0) + C(7,1) + C(8,2) + ... + C(16,10)

= C(7,0) + C(7,1) + C(8,2) + ... + C(16,10)

= C(8,1) + C(8,2) + ... + C(16,10)

= C(9,2) + ... + C(16,10)

= C(17,10)
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