The number of four digit telephone numbers M formed by the digits is : (Note: 0 can be accepted Ain the first place)

The number of four digit telephone numbers formed by the digits is (Note: 0 can be accepted in the first place)

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

The number of five digit telephone numbers none of their digits being repeated is

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

The number of five digit telephone numbers 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 digited even numbers that can be formed with the digits 0,1,2,5,7,8 is