Question

If 378y8 is a multiple of 3,where y is a digit, then find the value of y​

Answer 1

Step-by-step explanation:

3+7+8+y+8 is divisible by 3

So, y+26 is divisible by 3.

Therefore, y=1 or 4

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Answer 2

Answer:

1,4,7

Step-by-step explanation:

378y8 is a multiple of 3.

=>The sum of digits of 378y8 is multiple of 3.

=>3+7+8+y+8 is multiple of 3

=>26+y is a multiple of 3.

Now, we have to find values of y which makes it divisible by 3.

We see that if the values of y are 1,4,7 then it makes the number divisible by 3.

So the values of 3 is 1,4,7.