The sum of three terms of an A.P. is 21 and the product of the first and the third terms exceeds the second term by 6, find three terms.

Explanation

Let’s consider the three terms of the A.P. to be ` a – d, a, a + d`


so, the sum of three terms `= 21`


` ⇒ a – d + a + a + d = 21`


` ⇒ 3a = 21`


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