A 2-digit number less than 50 gives a remainder of 1 when divided by 5. It gives a remainder of 2 when divided by 9. List the possible number(s) in ascending order.
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50
Multiples of 9: 9, 18, 27, 36, 45
Multiples of 5 (+ 1): 6, 11, 16, 21, 26, 31, 36, 41, 46, 51
Multiples of 9 (+ 2): 11, 20, 29, 38, 47
List of possible number(s) = 11
Answer(s): 11