Latest MBA Aptitude Question SOLUTION: The product if 3 consecutive odd numbers is 531117. what is the sum of the numbers?

1) 183
2) 213
3) 243
4) 273

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The product if 3 consecutive odd numbers is 531117. what is the sum of the numbers?

1) 183
2) 213
3) 243
4) 273

Asked In MBA (11 years ago)

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Read Solution (1) :

Naveen Chaudhary  (9 years ago)

this can be done using options
let 3 digits be (x-2) , x , (x+2)
(x-2)*(x)*(x+2)=531117
(x^3)- 4x=531117
now
(x-2)+(x)+(x+2)=3x
now from 1st option 3x=183 x=61 & 60*60*60=216000 not close
now from 2nd option 3x=213 x=71 & 70*70*70=353000 not close
now from 3rd option 3x=243 x=81 & 80*80*80=512000 close

so put x=81 in (x^3)- 4x=81*81*81-4*81=531117

so ANS= 3) 243

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