Find the sum of the sequence Summation5k3 k2 10 80 42 54 10

Find the sum of the sequence. Summation^5_k=3 (k^2 + 10) 80 42 54 105

Solution

We have to plug k=3,4,5 and add the result

when k=3,we get     3²+10=19

when k=4,we get     4²+10= 26

when k =5,we get     5²+10=35

Therefore the required sum is   19+26+35= 80

Therefore the correct option is A