How many 7 - digit positive integers are made up of the digits 0 and 1 only, and are divisible by 6 ?
Answer Choices
A. 16
B. 11
C. 21
D. 10
E. 33
How many 7 - digit positive integers are made up of the digits 0 and 1 only, and are divisible by 6 ?
Answer Choices
A. 16
B. 11
C. 21
D. 10
E. 33