find the sum of first 50 multiple of 17
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Answer:
21675
Step-by-step explanation:
a(n) = a(1) + (n-1) d
= a(1)= 17
= n= 50
= d= 17
=17+(50-1)17
= 17+49x 17
= 17+ 833
=850
s(n)= n/2 [a(1) +a(n)]
=50/2 [17+850]
=25x 867
final ans. 21675
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