I can see how 11 year old could get this.
Wow, got it right. Though it took a little longer than 45 seconds for me. :(
Took me 52 seconds to get it, though I used paper.
Getting the answer is not that hard,....until you put the time limit on it....
“Show your work” ......
I was able to get it easy enough, but I failed because I was unable to explain it to my daughter in 45 seconds, and eventually she put on her headphones.
Math for me is mostly transfering skills to the next generation.
Show my work? You can't get distinct numbers with the same digits otherwise than by lengthening the list of digits. The smallest will be the list that "fills up" from the shortest to the longest needed. 1 digit long through 4 digits long only sums to 10 digits, so you will have to go to 5 digit length to get 11 all told and remain distinct. Thus the answer will be the 5 digit plus the minimum way of using the remaining 6, which means the answer is 11111+111+11+1 = 11234.
So...how about posting the problem? Michelle has one of those screwy sites you can’t back out of, which is why I don’t go too often.
11234