Sum of three numbers in A.P is 21 and product is 231.FInd all the numbers.

Asked by dhairya | 17th Jun, 2009, 03:12: PM

Expert Answer:

let the numbers be

 a-d,a,a+d

their sum is 21

So

(a-d)+a+(a+d)=21

So,

 3a=21

a=7

product = 231

So,

(7-d) *(7)*(7+d)=231

solving we will get the value of d as plus or minus 4.

 

 

Answered by  | 18th Jun, 2009, 02:02: PM

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