They say a four-year-old can solve it Published April 26, 2012 3:24 am by Claire Can you? The answer is online, but no fair looking it up. Have at it in the comment section. Published in Miscellaneous Previous Post Thursday links Next Post Friday links
I just posted a comment and I think I posted it in the wrong spot lol anyway,then
My answer is: 2. Because 5555 =0, 2222=0, 1111=0. So the values of 5, 2, & 1 are all 0. Then the only number left is an 8. Then I looked at the first number in the first row: 8809=6. So 0000 = 4 and 9999 = 4. Therefore the value of 4 & 9 is 1. So if 8809=6 then 8 must = 2: 2+2+1+1=6. Then the 2nd number in the 2nd colum is 8193=3 so we know 1111 = 0 meaning 1=0 and 3333 = 0 meaning 3=0 and 9=1 so if 8=2 we get 2+0+1+0=3 which is the same as 8193=3
So 2581 = 2 or 0+0+2+0 =2
This took me 20-30 minutes because I had to forget the ‘real’ values of the numbers. If this is correct.
Where can I check this out online to see if I’m correct?
sam johnson — I’ll post a link to the answer when more people have had a chance at it. For now, I’ll just say that your answer tempts me to give a clue … but I’m going to resist the temptation. 🙂
I decided I wasn’t really being fair & might send people off on wild goose chases. So … sam’s answer is correct. But his process falls into the “programmer” category.
It’s just a count of how many circles the numbers have.
Oh, and yes…2
Bingo! Kent nailed the simple solution. That’s what you get for hanging out with a four-year-old, Kent. 🙂
After I posted that I worried about the statement it made about my mental abilities…
(I almost called Emily in to help me, but decided that would be cheating. I was just thinking “OK, if pre-schoolers can do it, it probably has nothing to do with math, but with the shapes or simple counting”, and then I just saw it.)
Omg how many circles… so simple! Here I am assigning values and blah blah blah…ahahahahaha. I feel like Kent was a citizen and I was the government trying to solve the same problem! Could I have made it any more complicated?
I don’t know if I had some subconcious memory of having seen this problem before, but this took me about a minute of thinking before it dawned on me.
It did take considering, though, that a 4-year old would not be using math to solve this.
And yes, I *am* a programmer 🙂
Think like a 2 year old.
It took me close to 10 minutes, but I realized that four year olds being able to solve it had to be a major clue…. Just had to try to think like a four year old again! And yeah, I am also a programmer!
Thanks Kent, I was also looking for the simple solution and as one who has trouble with my check book wasn’t going to bother with anything complicated. 😉
After I looked for a pattern and didn’t see an obvious one, I just relaxed and quit over thinking it. Happy to say I figured it out in under 10 minutes.
That was fun. Another programmer, and the 4-year old clue was very useful. I started out thinking numerology, adding digits. No go, even with just the leading or trailing digit of the answer (altho a few worked out). Nothing seemed useful with column arithmetic. Next I thought about even/odd numbers, and that got me quickly scanning the whole table. Ah, bingo. It’s as simple as counting the “loops” in each number. It’s how I got from even/odd numbers to the graphical representation and counting attributes of them that really catches my fancy. No idea how that happened, but now I’m going to go find a good book on how the brain works and the thinking process. Wheee!
took about 2 minutes. Thought the 6’s were the answer at first. they are but only the bottom half.
Two. And figured it out in about thirty seconds. Most of that time rereading the directions. Have to think like a preschooler…preschoolers don’t see numbers, just lines curves dashes and CIRCLES on a page. I might have an unfair advantage being a stay-at-home dad with two of the geatest, 15 months and 3 years old.
2. In about 20 sec. But only with the huge hint! 🙂
I got it in about 3 min. In my line of work thinking outside the box is necessary.