Fourth term of an arithmetic progression is 8. What is the sum of the first 7 terms of the arithmetic progression?
Explanation:
Middle term of an A.P. is average of all the terms in A.P.
Number of terms = 7
Average of all these 7 terms = Middle term = Fourth term = 8
Therefore, sum of all the terms = 7 × 8 = 56.
Hence, option (c).
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