64.
The sum of 64 and 192 is 256.
56 + 64 = 120
The sum of 59 and 5 is 64.
The sum of 99 and 64 is 163.
The sum of all odd numbers from 1 to 64 inclusive is 4,096
The sum is 64
256
70
The two numbers that have a product of 64 and a sum of 16 are 8 and 8. Since both numbers are the same, their product is (8 \times 8 = 64) and their sum is (8 + 8 = 16).
64
69
65.16