That means that you are supposed to multiply both numbers.
A quicker way of writing 254 + 254 + 254 is 3 x 254, or three multiplied by 254. The answer is 762.
254 is the mass number of the isotope Fm-254.
30% of 254= 30% * 254= 0.3 * 254= 76.2
254 = 254/1 or 508/2
The factors of 254 are: 1 2 127 254
1 x 254, 2 x 127 = 254
254 of them.
254 is not prime. 254 = 2 * 127
127
7x-254 = -247
2x127 = 254
Multiples of 254.