if sum of 3 terms of ap is 21 then the middle term is
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if sum of 3 terms of ap is 21 then the middle term is
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Answer:
14
Step-by-step explanation:
Sn=n/2(middle term)
S3=3/2(middle term)
21=1.5(middle term)
middle term=21/1.5
middle term=14
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