Algebra> These questions are from permutations com...

These questions are from permutations combination please solve questions 40,41,42

Atul Tiwari , 9 Years ago

Grade 12th pass

1 Answers

Nishant Vora

distance travelled on kth day = $k (2^{n+1-k})$

Total distance travelled = $\sum_{k=1}^{n}k (2^{n+1-k})$

$\sum_{k=1}^{n}k (2^{n+1}{2^-k})$
$\sum_{k=1}^{n}k (2^{n+1}){2^{-k}}$

$(2^{n+1})\sum_{k=1}^{n}k {2^{-k}}$

Last Activity: 9 Years ago

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Algebra> These questions are from permutations com...

These questions are from permutations combination please solve questions 40,41,42

Atul Tiwari , 9 Years ago

Nishant Vora

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