The middle term of an AP 6,13,20,216 is
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Answer:answer 111
Step-by-step explanation:a=6d=7tn=a+(n-1)*d
216=6+(n-1)*7n=31
total no.of terms =31middle term =(31+1)=16tht
16=a+(16-1)d=6+(15*7)
therefore the middle term of A.P =11
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