Thursday 19 December 2013

Number divisibility test


By Rule Example
2 If last digit is 0,2,4,6,8 28,40,10
3 If Sum of all digits is divisible by 3. 63=(6+3)=9/3
4 If Number formed by last two digits is divisible by 4 412,here 12/4
5 If last digit is 0 or 5 10,15,20
6 If number is divisible by both 2 and 3 12,24
7 If you double the last digit and subtract it from the rest of the number and if answer is: 0, or divisible by 7 140, 2*0=0, 14-0=14 and 14/7
8 If Number formed by last three digits is divisible by 8 234200, here 200/8
9 If sum of its all digits is divisible by 9 396=3+9+6=18/9
10 If it last digit is 0 10,20,1000
11 If difference of sum of odd place digits and sum of even place digit is either 0 or divisible by 11 1111, here 2-2=0 And 6226=8-8=0
12 If this number is divisible by both 3 and 4 48 here 48/3 and 48/4
14 If this number is divisible by both 2 and 7 28 here 28/2 and 28/7
15 If this number is divisible by both 3 and 5 30 here 30/3 and 30/5
16 If Number formed by last four digits is divisible by 16 222400 here 2400/16
24 If this number is divisible by both 3 and 8 48 here 48/3 and 48/8
40 If this number is divisible by both 5 and 8 80 here 80/5 and 80/10
80 If this number is divisible by both 5 and 16 160 here 160/5 and 160/16

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