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Answered

5

E 2n+1 evaluate

n=1


3

E 3n evaluate

n=1


Type the formula for the number of permutations of n things taken r at a time.

P(n,r)=?


Type the formula for the number of circular permutations of n things.

Pc(n,n) = ?

Verified Answer :

Part1 )
2n+1 from n= 1 to n = 5 = 3 + 5 + 7 + 9 + 11 = 35 

Part 2 )
3n from n = 1 to n = 3 = 3 + 6 + 9 = 18 

I hope it helped.

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