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Mathematics 19 Online
OpenStudy (anonymous):

A census taker knocks on a door. A mother answers. The census taker says, “ I need to know the number of children you have, and their ages’’. The woman responds in puzzle-ese. “I have three daughters, the product of their ages is 36 and the sum of their ages is equal to the house number next door.” The census taker, who never wastes questions, computes for a while and then asks. “Does your oldest daughter love dogs?” The mother answers affirmatively. The census taker says, “Thank You. I now know the ages.”What are the ages of the children?

OpenStudy (anonymous):

help please!

OpenStudy (ash2326):

@rafeds08 is there any other data? house no. ?

OpenStudy (jiteshmeghwal9):

yes is there given any address of the neighbourer?

OpenStudy (anonymous):

this data is insufficient

OpenStudy (anonymous):

the data is correct. the clue is : what is the special in number 36?

OpenStudy (ash2326):

I got something :)

OpenStudy (unklerhaukus):

*\[36=2^23^2\]

OpenStudy (anonymous):

it seems that the eldest is not twin

OpenStudy (unklerhaukus):

one daughter could be 1 year old

OpenStudy (anonymous):

possible that one daughter is 1 yr old

OpenStudy (anonymous):

yes it is possible that daughter is 1 yr old

OpenStudy (unklerhaukus):

2x3x6=36 1x6x6=36 4x3x3=36 4x9x1=36 12x3x1=36

OpenStudy (ash2326):

If we write all the factors of 13 and their sum, two set of factors have same sum, but has one oldest daughter. So it should be 2, 2, 9 See the pic

OpenStudy (ash2326):

*factors of 36

OpenStudy (unklerhaukus):

@rafeds08, your right 1x6x6 is not a solution because the eldest would be twins

OpenStudy (anonymous):

thanks ash2326

OpenStudy (ash2326):

Welcome:D

OpenStudy (unklerhaukus):

how did you know it was 2, 2, 9 ?

OpenStudy (unklerhaukus):

oh because the censes taker know the house number , even if we dont

OpenStudy (unklerhaukus):

but we do know they dont waste questions

OpenStudy (ash2326):

Yes

OpenStudy (anonymous):

the question is correct, the answer needs logical reasoning

OpenStudy (anonymous):

thus the only concern there is the number 36... what would be something special in number 36?

OpenStudy (anonymous):

base on ash2326 answer, the sum of 1,6,6 and 2,2,9 is same but base on the problem the oldest daughter loves dog,thus the oldest daughter in not twins. and the right answer is 9,2,2

OpenStudy (ash2326):

@rafeds08 you understood it well, I must say, it's a nice question

OpenStudy (unklerhaukus):

its was a great question

OpenStudy (anonymous):

thanks for the sharing your both great

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