Discussion
The difference of the place values of 5 and 7 in the number 352876 is :
Answer: C
The difference of the place values is 49930.
In 352876, the digit 5 is in the ten-thousands place and the digit 7 is in the tens place:
\[ \begin{aligned} \text{place value of } 5 &= 50000 \\ \text{place value of } 7 &= 70 \\ 50000 - 70 &= 49930 \end{aligned} \]
Option D, 49993, is 50000 − 7, which wrongly uses the face value of 7, and 49997 and 50007 match no pairing of the two place values. The place value of a digit is the digit times the value of its position, so the 7 here is worth 70.
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