The difference between the place value and face value of 9 in the 63894531 is:Options :71912331

The place value of a digit in a number is the value it holds to be at the place in the number. The face value of a digit in a number is the value of the digit itself.

In the number 63894531:

1. The face value of 9 is 9 itself.

2. The place value of 9 is 9000000 because it is in the millions place.

So, the difference between the place value and face value of 9 in the number 63894531 is 9000000 - 9 = 8999991.

Therefore, none of the options provided (71912331) is correct. The correct answer is 8999991.