For example:
Arrange according to differences
1+2=3; 3+7= 10; 10- 1=9; 9-3=6; 6- 1=5;
+2; +7; - 1; -3; - 1; According to this calculation, the last two digits should be+7; +2,
So the heaviest result in parentheses should be 5+7 =12; 12+2= 14。
Namely13109651214.
trait
Note: The following characteristics are expressed in decimal terms based on integers.
A multiple of 2
At the end of a number is an even number (0, 2, 4, 6, 8), which is a multiple of 2.
Like 3776. The end of 3776 is 6, which is a multiple of 2. 3776÷2= 1888?
Multiple of 3
The sum of the digits of a number is a multiple of 3, and this number is a multiple of 3.
4926。 (4+9+2+6)÷3=7, which is a multiple of 3. 4926÷3= 1642