How many figures are required to number the pages the pages of a book containing 2200 pages? Choices.
A) 7593 B) 6693 C) 7693 D) 7793 E) 7893
1 to 9 = 9 * 1= 
<gadget id="calculator">9 * 1</gadget>
<output>9</output>
9   10 to 99= 90 * 2= 
<gadget id="calculator">90 * 2</gadget>
<output>180</output>
180   100 to 999= 900 * 3= 
<gadget id="calculator">900 * 3</gadget>
<output>2_700</output>
2700   1000 to 2200= 1201 * 4= 
<gadget id="calculator">1201 * 4</gadget>
<output>4_804</output>
4804   -----------   7693   ANSWER:7693
<result>C</result>
How many figures are required to number the pages the pages of a book containing 2200 pages?