Posted by Anne on Wednesday, June 6, 2012 at 6:41am.
What is the greatest 7 digit number without repeating any digit?

Math  Anne, Wednesday, June 6, 2012 at 7:04am
I am number greater than 70 000 but less than 90 000.My ones digit is the only even prime number.My tens digit id the same as my ones digit.My ten thousands digit is four times my ones digits.Both my hundreds and thousands digits are half the ten thousands digits.What number am i?

Math  Reiny, Wednesday, June 6, 2012 at 8:15am
how about
9876543 ? 
Math  Steve, Wednesday, June 6, 2012 at 12:11pm
part b:
xxxxx
ones is even prime: 2
xxxx2
tens=ones = 2
xxx22
10K = 4*ones = 8
8xx22
100,1K = 8/2 = 4
84422