Find the midterm of A. P. 1,4,7, _ _ _ _ _ 97
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Common difference = 4 - 1 = 3
S(n) = a + d(n - 1)
97 = 1 + 3(n - 1)
96 = 3(n - 1)
32 = n - 1
33 = n = number of terms
Mid term = (33 + 1)/2 = 16
16th term = a + 15d
=> 1 + 15(3)
=> 1 + 45
=> 46
S(n) = a + d(n - 1)
97 = 1 + 3(n - 1)
96 = 3(n - 1)
32 = n - 1
33 = n = number of terms
Mid term = (33 + 1)/2 = 16
16th term = a + 15d
=> 1 + 15(3)
=> 1 + 45
=> 46
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