y%2! , what does this mean?

Answer 1

you have a variably y which you divide by two and the returning value is the remainder of the division

Answer 2

pls notice, it's the REMAINDER

so

9%2. would be 9/2 which is 4 and a remainder of 1

so 9%2 will return 1

Answer 3

Divide y by 2 and the returning value is the remainder of the division. Thanks man.