The minimum number of digits required to form every number which is greater than 900 and less than 9,000 is: -

The minimum number of digits required to form every number which is gr

1.	The minimum number of digits required to form every number which is greater than 900 and less than 9,000 is: -
A.	39
B.	72
C.	49
D.	81
Answer» B. 72