Q20 of 40 Page 1

Find the common difference of the A.P whose first term is 12 and fifth term is 0.

⇒ First term = 12, Fifth term = 0

So, a = 12, a₅ = a + 4d = 0 where ‘a’: first term, ‘d’: common difference of AP

⇒ 12 + 4d = 0

⇒ d = -3

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