Question

replace * by the smallest digit so that the number is divisible by 3 the number is 4*3

Answer 1

The smallest no by which * should be replaced is 2. The no becomes 423 which is divisible by 3.(we can apply di visibility rule by 3 - 4+2+3 =9 which is divisible by 3 so the no is divisible by three)

Answer 2

For a number to be divisible by 3 The sum of digits should be a multiple of 3  Therefore * can be 2,5,8  Hope it helps you Please mark me as the brainliest