In four-digit integer numbers from 1001 to 9999, the digit group "37" (in the same sequence) appears _______ times.

In four-digit integer numbers from 1001 to 9999, the digit group "37"

1.	In four-digit integer numbers from 1001 to 9999, the digit group "37" (in the same sequence) appears _______ times.
A.	270
B.	279
C.	280
D.	299
Answer» D. 299

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In four-digit integer numbers from 1001 to 9999, the digit group "37" (in the same sequence) appears _______ times.

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