Problem 16 from prior weeks.
Correct!
Explanation:
Solution: Rule of backward perfect squares. The numbers are squared values from four to nine (16, 25, 36, 49, 64, 81). The digits in the tens place and ones place are switched so the digits in the tens place moves to the ones place and the ones to the tens (61, 52, 63, 94, 46, 18). The numbers are then ranked in order from least to greatest (18, 46, 52, 61, 63, 94). So, the solution is 94.