解:因为原来的六位数第一位是1,设原六位数是100000+x
那么新的六位数是:10x+1
由题意和已知,得:
10x+1=3(100000+x)
10x+1=300000+3x
7x=299999
x=42857
所以原六位数为:142857
解:设中间的五位数是x,
10x+1=(100000+x)×3,
7x=299999,
x=42857,
所以原数是:142857;
故答案为:142857.
Would you have a way to a graduation or the more you do you should see
111113