How many four-digit numbers that do not contain the digits 2, 3, or 6 are there?  Choose the correct option.
A) 2058  B) 3584  C) 4096  D) 5040  E) 7200
The 1st digit can be filled up by the numbers: {1,4,5,7,8,9} = 6 ways   The 2nd digit can be filled up by the numbers: {0,1,4,5,7,8,9} = 7 ways   The 3rd digit can be filled up by the numbers: {0,1,4,5,7,8,9} = 7 ways   The 4th digit can be filled up by the numbers: {0,1,4,5,7,8,9} = 7 ways   The total number of such four-digit numbers is   6*7*7*7= 
<gadget id="calculator">  6*7*7*7</gadget>
<output>2_058</output>
2058   The answer is 2058.
<result>A</result>
How many four-digit numbers that do not contain the digits 2, 3, or 6 are there?