Question

2. Find all possible values of y for which the 4-digit number 64y3 is divisible by 9. Also,
find the numbers,
​

Answer 1

Answer:

y=5 only

Step-by-step explanation:

divisibility rule of 9 is the sum of given digits should be divisible by 9

so 6+4+3+y=13+y

13+y in this y is a only one digit number so if I add it to 13 then it should give us the multiple of 18

so that would be 18 because next multiple after 13 is that only

so 13+y=18

y=18-13=5