in the series 5+7+9+....+43, if a20=43, then S20 is
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Answered by
6
Answer:
64
Step-by-step explanation:
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Answered by
16
correct ans is 480
Step-by-step explanation:
Sn=n÷2(a+l)
S20=20÷10(5+43)
S20=10×48
S20=480
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