Question

if a numbr is ivisibl by 10 is it ivisibl by 2 an 5

Answer 1

yes it is...btw u should get a new keyboard...or change the faulty keys

Answer 2

if "y" is divisible by 10, then it can be expressed as y=10x, where x is an integer
y=10x --->y=2·5·x--->y=2·(5x) which means y is an integer (5x) times 2, that is, divisible by 2
You also have y=10x=2·5·x--->y=5·(2x) which means y is an integer (2x) times 5, that is, divisible by 5