lf for any A. P. d=5 then t18-t13=
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Step-by-step explanation:
t 18 - t13 = ?
d = 5 (given)
t18 = a + 17d
t13 = a + 12d
t18 - t13 =
(a + 17d)-(a + 12d)
a + 17d - a - 12d
a - a + 17d - 12d
= 5d
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