Question

52y5 is a 4 - digit number and is a multiple of 9 . what is the value of y?​

Answer 1

5+2+y+5=18

12+y=18

y=18-12

y=6

Answer 2

if 52y5 is multiple of 9 then,

5 + 2 + y + 5 is also multiple of 9

12 + y is also multiple of 9

Then y = 6 because y is the single digit number.