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| 1. |
Find the middle term of the AP 6,13,20,...,216. |
| Answer» A=6d=7Tn= a+ (n-1)d216=6+(n-1)*7n=31total no. of terms=31middle term=(31+1)/2 =16th\xa0T16= a+(16-1)d = 6+(15*7) =111therefore the middle term of the AP is\xa0111 | |