Problem
13)
Solution
Step 1 ：We can simply list the multiples of 13 until we reach one with 3 digits: 13, 26, 39, 52 ,65, 78, 91, 104. So, the greatest two-digit multiple of 13 is \(\boxed{91}\).
Step 1 ：We can simply list the multiples of 13 until we reach one with 3 digits: 13, 26, 39, 52 ,65, 78, 91, 104. So, the greatest two-digit multiple of 13 is \(\boxed{91}\).
