Answer :

We know that if sum of digits of a number is divisible by 9, then the number is divisible by 9.

Here, for the given number to be divisible by 9

4 + 8 + 6 + * + 7 = multiple of 9

* + 25 = 0, 9, 18, ….(multiple of 9)

Hence,

* + 25 = 27 [ lowest multiple then]

* = 2

∴ x = 2

∴ the least value of x is 2

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