What number can stand in the place of X in the five-digit number 2582X , if the number is divisible by 3?Explain the answer!
A number is divisible by 3 if the sum of its digits is divisible by 3.
2+5+8+2+0=17
2+5+8+2+1=18
2+5+8+2+2=19
2+5+8+2+3=20
2+5+8+2+4=21
2+5+8+2+5=22
2+5+8+2+6=23
2+5+8+2+7=24
2+5+8+2+8=25
2+5+8+2+9=25
1; 4; 7