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sourav gill Grade:
        

Plz solve this Question!!!


The sum of the three numbers in A.P is 21 and the product of their extremes is 45. Find the numbers.

8 years ago

Answers : (1)

raj kaushik
26 Points
										

Let the numbers are be a - d, a, a + d


Then a - d + a + a + d = 21


3a = 21


a = 7


and (a - d)(a + d) = 45


a2 - d2 = 45


d2 = 4


d = +2


Hence, the numbers are 5, 7 and 9 when d = 2 and 9, 7 and 5 when d = -2. In both the cases numbers are the same.

8 years ago
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