solve the question of math
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a = -65
d = -(19-23) = -(-4) = 4
n = 11
Tn = a + (n-1)d
T11 = -65 + 10(4)
= -65 + 40
= -25.
d = -(19-23) = -(-4) = 4
n = 11
Tn = a + (n-1)d
T11 = -65 + 10(4)
= -65 + 40
= -25.
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