http://www.mindchallenger.com/p16.html
2007-09-03 20:07:39 · 12 answers · asked by Akilesh - Internet Undertaker 7 in Science & Mathematics ➔ Mathematics
2,2,9
Just get a list of 3 factors of 36 and see which three sum to a common value.
In this case 1,6,6 and 2,2,9 both sum to 13. That is why Tom could not say for sure.
Then knowing that one of them was older than the other two gives the answer.
2007-09-03 20:15:37 · answer #1 · answered by Dr D 7 · 4⤊ 0⤋
The two best possibilities are 12, 3, 1 and 9, 2, 2. however, like posted earlier, all sums add up differently which makes the 9, 2, 2 the best answer- since he needed the additional clue to eliminate.
2007-09-03 20:39:49 · answer #2 · answered by Dan 2 · 1⤊ 0⤋
Look at the factorizations of 36: (36,1,1), (18,2,1), (9,4,1),
(9,2,2), (6,6,1), (6,3,2), (4,3,3). All these add to distinct
sums except 9+2+2 = 6+6+1 = 13. That must be the 2 digits
of Tom's house number or he would not have
needed more information. The fact that the family has an
oldest daughter means the other two must be 2, not 6. So, the
kids are aged 9, 2 and again 2.
2007-09-03 20:17:26 · answer #3 · answered by Anonymous · 7⤊ 1⤋
The factors of 36 are 1,2,3,4,6,9,18 and 36. Their ages are 18, 2 and 1. Any other combination would give an improbable age for the one doing the washing.
2007-09-03 20:54:34 · answer #4 · answered by zee_prime 6 · 0⤊ 2⤋
I will not post an answer as you got the correct solution, but thanx
for the riddle answers geek. If I have extra time in my class, I will riddle them with it.
2007-09-03 20:47:51 · answer #5 · answered by swd 6 · 1⤊ 1⤋
1
2
18
explanation
eldest is 18
assuming no twins
eldest was left to watch the other two and doing laundry, she must be older than 15
the only answer is 18, 2 and 1
2007-09-03 20:17:16 · answer #6 · answered by dbondocoy@yahoo.com 3 · 1⤊ 4⤋
youngster A & youngster B went in the time of. youngster B got here back by myself, fetch youngster C in the time of. Then youngster B got here back back. Cannibal A & C flow over leaving Cannibal B & youngster B at the same time. the youngster C got here back to fetch youngster B in the time of. as quickly as youngster C alight on the different area, youngster B on the instant got here back to fetch Cannibal B in the time of. specific?
2016-12-31 11:42:04 · answer #7 · answered by Anonymous · 0⤊ 0⤋
I've come up with a couple solutions.
6,3, and 2.
4, 3, and 3.
12, 3, and 1.
36, 1, and 1.
That's all I got.
2007-09-03 20:16:23 · answer #8 · answered by r4 3 · 0⤊ 3⤋
eldest daughter = 14
2nd eldest = 12
youngest = 10
unless they're twins.
2007-09-03 20:32:29 · answer #9 · answered by der Bomber 3 · 0⤊ 3⤋
if u click on the webpage u open up a new window...case solved...am i a genius now???
2007-09-03 20:13:03 · answer #10 · answered by Anonymous · 0⤊ 4⤋