Question

If the number 9y7 is a multiple of 3, where y is a digit. Find the value of y.​

Answer 1

Answer:

2

Step-by-step explanation:

y = 2

If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.

so, 9+2+7 = 18

18 is divisible by 3

so y = 2

Answer 2

Answer:

2,5,8

Step-by-step explanation:

a number is a multiple of 3 , it the sum of digits is also a multiple of 3 , I.e

9+y+7=multiple of 3

16+y=multiple of 3

the closest multiple of 3 greater than 16 is 18,

so

16+y=18

y=18-16

y=2

y can be 2 , (2+3)=5 or (5+3)=8

so there are 3 values of y ,

2,5,8

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