In an series 5+7+9...+43 if a20 = 43 then s20 is
Answers
Answered by
2
Answer:
480
Step-by-step explanation:
a=5
d=2
a20=43. (given)
S20=?
according to question,
S20=[n/2(2a+(n-1)d]
=20/2(2×5+(20-1)2
=10(10+19×2)
=10×48
=480
so the answer is 480
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Answered by
0
Answer:
480 is the correct answer
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