Hello again MHF
here's another question that I am struggling with:
"We say a number is ascending if its digits are strictly increasing. For exmaple,189 and 3468 are ascending while 142 and 466 are not. For which ascending 3-digit number n (between 100 and 999) is 6n also ascending?"
ALSO if you could have a look at:
Question 23 is there any logical way to go about doing that, I having trouble folding it up and unfolding it in my head :O (please don't say draw map out and start doing it!), also you may want to have a look at the last question, Question 30
That seems insane..