The number of terms in the AP 2,5,8 ..........59 is
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6
Tn = a + (n-1)d
59 = 2 + (n-1)3
57 = 3n-3
60 = 3n
n = 20
59 = 2 + (n-1)3
57 = 3n-3
60 = 3n
n = 20
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Answer is given in the pic.
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