678 x 45 = 30510.
The product is 30,510
9 plus 2 plus 2 plus 45-678 is equal to -620.
678
They have consecutive numbers within them. 678 is 6, 7, 8 9012 is 9, 10, 11, 12
They all have consecutive digits within them.
They are: 3 times 15 = 45, 9 times 5 = 45 and 1 times 45 = 45
Square root of 45 times square root of 45 = 45
44 times 45=1,980
9 times 5 = 45
45 x 45 = 2025
How about 9 times 5 = 45