100, 121, 144...
49 equals 72, and the next square number is 82 = 64.
81
49
49
144
== 49 == 144 = 122 121 = 112 100 = 102 81 = 92 64 = 82 Implies 122, 112, 102, 92, 82 So the next number should be 72 = 49. So, the next number is 49.
49
There are a few possibilities, but 100 is the most likely.
These are square numbers. 12 × 12 = 144, 11 × 11 = 121, 10 × 10 = 100, 9 × 9 = 81, 8 × 8 = 64 so, 7 × 7 = 49 The next number is 49
The only common factor of 49 and 64 (whole number that goes into both of them evenly) is ' 1 '.
100. the pattern is 7 squared, 8 squared, 9 squared....
81