Jack used the digits 4,5,6,7 to make the largest and smallest numbers possible. Then he subtracted the 2 numbers and came up with 2,997. What did Jack do wrong?
2 answers
He forgot the biggest number he can make is 777 and he forgot to say there is 444 small numer
Well, since
7777-4444 = 3333
I've no idea.
7654-4567 = 3087
hmmm. still 90 off
So, he must have done
7564-4567 = 2997
or
7654-4657 = 2997
So, he must have transposed two digits as shown above. That, as well as assuming that he could not repeat digits in the numbers.
7777-4444 = 3333
I've no idea.
7654-4567 = 3087
hmmm. still 90 off
So, he must have done
7564-4567 = 2997
or
7654-4657 = 2997
So, he must have transposed two digits as shown above. That, as well as assuming that he could not repeat digits in the numbers.