Answer
$10000$
Work Step by Step
It has been seen that the first three digits are locked in place. So, for the last $4$ digits, we ave $10$ choices each for each of those $4$ spaces.
That is,
$ 1\cdot 10 \cdot 10 \cdot 10 \cdot 10 =10000$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 10 - Test - Page 1127: 21
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