43,45,47,49,51,53,55,57,59,61,63
There are several odd numbers between 42 and 64. One such is 61.
The sum of all odd numbers from 1 to 64 inclusive is 4,096
32
The sum of the first 8 odd numbers is 64.
Square numbers 16, 25, 36, 49, 64, 81, 100
There are several odd numbers between 42 and 64. One such is 61.
4
7 of them.
The sum of all odd numbers from 1 to 64 inclusive is 4,096
64
32
64
The sum of the first 8 odd numbers is 64.
37
Square numbers 16, 25, 36, 49, 64, 81, 100
The greatest common factor of the numbers 48, 64 and 72 is 8.
Expressed algebraically, this is equal to x/64 + 48.