Division Tricks
Division Rule for 11
Alternating sum of the digits and subtract digits in the given number(add digit, subtract next digit, add next digit and so on).
If result is 11 or 0 or -11,then a number is divisible by 11.
Examples:
Example 1: 31405/11 = 2855
+3-1+4-0+5=11,hence the number is divisbile by 11.
Example 2: 4884/11 = 444
+4-8+8-4=0,hence the number is divisibile by 11.
Example 3: 121/11 = 11
+1-2+1=0,hence the number is divisibile by 11.