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If the pth term of an AP is q and the qth term is p. P.T its nth term is (p+q-n).
Ans: APQ
ap = q
aq = p
an = ?
a + (p-1) d = q
a + (q-1) d = p
d[p - q] = q - p Sub d = -1 to get ⇒ = -1 ⇒ a = q + p -1 an = a + (n - 1)d
= a + (n - 1)d
= (q + p - 1) + (n - 1) - 1 an = (q + p - n)
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