SOLUTION: 1.given that three numbers form an A.P.their sum is 21,and their product is 231.find these numbers.
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-> SOLUTION: 1.given that three numbers form an A.P.their sum is 21,and their product is 231.find these numbers.
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You can put this solution on YOUR website! 1. Given that three numbers form an A.P. Their sum is 21,and their product is 231.find these numbers.
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Let x be the middle term of this A.P.
Then the three terms are (x-d), x and (x+d).
The sum of three is 3x = 21. Hence, x = 7.
The product of three is (7-d)*7*(7+d) = 231, or
49-d^2 = = 33.
