2
The number could be 61 due 84.
59
65
6x < 60
883
883
60 less than 345 = 345 - 60 = 285
1 is a triangular and square number, and it is less than 60.
280
425
2
53
60
The number could be 61 due 84.
Any number of seconds less than 60.
1 is an example.