Question

Replace "*" by the smallest possible digit so 2*985 number is divisible by 3 & 9

Answer 1

Answer:

=> 2 + x + 9 + 8 + 5 = 24 + X

x = 0 , given number will be divisible by '3' but not 9

at x = 3 , given number will be divisible by '3' & '9'

Answer 2

Answer:

3 should replace the blank.

Step-by-step explanation:

Let the digit be x

We know that a number is divisible by 3 when the sum to digits of that number is 3 or a multiple of 3. Also when we talk about the divisibility of 9, all its multiple have the sum of their digits ,9.

So the sum of the digits of this number number should be 9.

2+9+8+5=24

Now, 2+4=6

so x should be added to 6 to make it 9.

6+x=9

x=9-6

=3