12:-The number should be divisible by both 3 and 4 then only it is divisible by 12.13:-Step 1: Split the number into 2 parts ; the last digit and the rest ie. the truncated number.Step 2: MULTIPLY the last digit by 4.Step 3: Add this value obtained to the truncated number.Step 4: Check if this number is divisible by 13. If you can’t tell repeat the steps from 1 with the NEW number.7:-Double the last digit and subtract it from a number made by the other digits. The result must be divisible by 78:-The last three digits should be divisible by 8 then the whole no. is divisible by 8.9:-The sum of the digits should be divisible by 910:-The number should end with 02:- the last digit should be even.4:-the last two digits should be MULTIPLE of 4.6:-add the digits.result should be even and divisible by 38:-The last three digits should be divisible by 8 then the whole no. is divisible by 8.3:-the sum of digits should be divisible by 3plz mark as brainliest...I NEED it...if U mark, a hearty thanks to you