5x=3x+ 14+32
5x=3x+46
(5-3)x=46
x=23，3x+ 14=83
83+23= 106 (person)
So * * * has 106 participants.
2. Because ABCDEF and BCDEFA are both 6 digits.
Available A≤3
3F=A，F= 1，A=3。
The number at the end of 3E is 1, so E=7.
The number at the end of 3D+2 is 7, so D=5.
3C+ 1 has a number 5 at the end, so C=8.
The number at the end of 3B+2 is 8, so B=2.
Therefore, this solution does not hold water.
3F=A，F=7，A= 1。
The number at the end of 3E+2 is 7, so E=5.
The number at the end of 3D+ 1 is 5, so D=8.
The number at the end of 3C+2 is 8, so C=2.
3B ends with 2, so B=4.
So the solution holds, and the new number is 42857 1.
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