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12th term will be the 1st negative term
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First term = 53
Common difference = 48 - 53 = -5
nth term, Tn = 53 + (n-1)×-5 = 58 - 5n.
Tn = 0, gives n = 58/5 = 11.6
Therefore next integer for n gives first -ve value for Tn.
i.e., 12th term is first negative number
Common difference = 48 - 53 = -5
nth term, Tn = 53 + (n-1)×-5 = 58 - 5n.
Tn = 0, gives n = 58/5 = 11.6
Therefore next integer for n gives first -ve value for Tn.
i.e., 12th term is first negative number
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