Electricity department needs to generate bills for a locality. They decide the bill no. to be a 6 digit number with 4 and 7 fixed as first and last digits. No digits should be repeated anywhere in the bill number. 4 denotes station number and 7 denotes the area. How many such bill numbers can the electricity department generate?

Electricity department needs to generate bills for a locality. They de

1.	Electricity department needs to generate bills for a locality. They decide the bill no. to be a 6 digit number with 4 and 7 fixed as first and last digits. No digits should be repeated anywhere in the bill number. 4 denotes station number and 7 denotes the area. How many such bill numbers can the electricity department generate?
A.	890
B.	1680
C.	5040
D.	10080
Answer» C. 5040