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If P stands for P(r) then the sum of...

If P stands for ` P_(r)` then the sum of the series ` 1 + P_(1) + 2P_(2) + 3P_(3) + …+` nPn is

A

`P_(n+1)`

B

`P_(n+1) -1`

C

`P_(n+1)+1`

D

`.^(n+1)P_(n-1)`

Text Solution

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The correct Answer is:
B
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SURA PUBLICATION-COMBINATORICS AND MATHEMATICAL INDUCTION -Exercise 4.5
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  11. In a plane are 10 points are there out of which 4 points are coll...

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