Solve this problem in less than 2 minutes! Okay, maybe 3, um, 4??? :/
3568=3
8066=5
7601=2
8166=4
6233=1
1541=0
9888=7
6906=4
8968=6
4500=?
Nothing, huh? Come on! Don't overheat your brain. Actually, kids can solve this problem in less than 5 minutes. Ooh, that's going to be a giant bummer if you can't. Those kids will eat you alive!
P.S. This blog entry is dedicated to dear Onee-chan and anybody who's interested in solving math puzzles and/or problems.
P.P.S. Spoiler alert! I'm not interested in math or any of its scary and weird family members. D:
But you guys have fun. :)

Comments
Finally! Your smile! Yayyy...=D
^_^
I'm like this: o-O
Also this:
=[
Aseven, look at the face on your this blog... It would be me.. :))
You're right. This is my comment on Vision's wall:
Regardless, all comments are always welcome. Valid is a strong word in this scenario and it causes misunderstanding. Let's just say "the correct answer without having second thoughts" =)
:)))))) Aseven, I know well the answer is 2 because once I ever knew this kind of question, but forgot at first. I was just asking if my second answer (2) was not valid, because I already guess 5 at first. That's okay. But, you should have written "the first answer is valid". No second chance. Hmm..
Let me make myself clear. I showed this to my 4-year-old nephew and his answer was 2. But his Papa was trying to prove him wrong. I wanted to make sure this claim "Adult brains look for a mathematical solution. Those not yet trained to recognize the sequence as an equation do not limit their search for a solution and begin to evaluate the pattern visually." checks out. Of course this is NOT a valid experience. But still. To be fair, I decided to choose those who were sure the answer is 2.
Hmm..
Hmm..
It means not something to worry about.
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