Question

using divisibility tests determine which of the following numbers are divisible by 4 and 8 the question is 14560,21084,31795072 ,1700,2150

Answer 1

divisibility test for 4 and 8 are as follows

test for 4, for any n digit number if the last 2 digits are divisible by 4 the whole number will be divisible by 4

and test for 8 for any n digit number if the last 3 digits are divisible by 8 then the whole number be divisible by 8

14560, 21084, 31795072, 1700 are divisible by 4

14560, 31795072 are divisible by 8