" The number of five-digit telephone numbers having at least one of their digits repeated is "

The number of five - digit telephone numbers having atleast one of their digits repeated is (00000 is also a telephone number)

The number of five-digit telephone numbers having atleast one of their digits repeated is a. 90000 b. 100000 c. 30240 d. 69760

The number of five-digit telephone numbers having atleast one of their digits repeated is a. 90000 b. 100000 c. 30240 d. 69760

The number of 5- digit telephone number having at least one of their digits repeated is :

The number of 5 digit telephone numbers having atleast one of their digits repeated is

The number of four digit telephone numbers having at least one of their digits repeated is: (Note: 0 can be accepted in first place)