Step-by-step explanation:
the number divisible by 3 is the digit add together can divisible by 3.
778 is 7+7+8=22 (can't divisible by 3)
339 is 3+3+9=15 (can)
483 is 4+8+3=15 (can)
2747 is 2+7+4+7=20 (can't)
829 is 8+2+9=19 (can't)
438 is 4+3+8=15 (can)
51.979 (can't) because it isn't intiger number.
1116 is 1+1+1+6=9 (can)
...
So 339 483 438 1116 1857 57 3417 divisible by 3.
