How many four-digit numbers that do not contain the digits 2, 3, 4, or 6 are there?	Pick.
A) 1025 B) 1080 C) 2096 D) 3040 E) 4200
The 1st digit can be filled up by the numbers: {1,5,7,8,9} = 5 ways   The 2nd digit can be filled up by the numbers: {0,1,5,7,8,9} = 6 ways   The 3rd digit can be filled up by the numbers: {0,1,5,7,8,9} = 6 ways   The 4th digit can be filled up by the numbers: {0,1,5,7,8,9} = 6 ways   The total number of such four-digit numbers is 6*7*7*7 = 1080   The answer is 1080.
<result>B</result>
How many four-digit numbers that do not contain the digits 2, 3, 4, or 6 are there?