How many 6 digit telephone numbers can be formed if each number starts with 35 and no digit appears more than once?
Choose one:  A) 720  B) 360  C) 1420  D) 1680  E) 1780
6 digit number where first 2 digit are fixed .   1*1*8*7*6*5= 
<gadget id="calculator">1*1*8*7*6*5</gadget>
<output>1_680</output>
1680   ANSWER:1680
<result>D</result>
How many 6 digit telephone numbers can be formed if each number starts with 35 and no digit appears more than once?