Question

test for divissibillity the following numbersby the factor 3,4,5,8,9,11​

Answer 1

Answer:

if a number should divisible by 3 then sum of digits in a numbers be multiple of 3

eg 5454=5+4+5+4=18

if a number should divisible by 4 them last two digits of a number should be divisible from 4

eg 21548 where 48 is completely divisible from 4

if a number should divisible by 5 then unit place of a number should be 0 or 5

eg 21340 where last unit digit is 0

3535 where last unit digit is 5

if a number should divisible by 8 then last three digit of a number should be divisible from 8

eg 21064 where 064 is completely divisible from 8

if a number should divisible by 9 them sum of digits of a number be a multiple of 9

eg 213408=2+1+3+4+0+8=18

if a number should divisible by 11 then sum of odd place of digits ina number minus sum of even place of digits in a number

eg 29435417=(7+4+3+9 ) -(1+5+4+2) =23-12=11