How many numbers lying between 100 and 1000 can be formed with the digits 1,2,3,4,5 if the repetition of digits is not allowed?

How many numbers lying between 100 and 1000 can be fortition with the digits 0,1,2,3,4,5 ,if the repetition of the digits is not allowed?

How many numbers between 100 an 1000 can be formed with the digits 5, 6, 7, 8, 9, if the repetition of digits is not allowed ?

How many numbers between 2000 and 3000 can be formed from the digits 2, 3, 4, 5, 6, 7 when repetition of digits is not allowed?

How many numbers between 400 and 1000 can be made with the digits 2,3, 4, 5, 6 and 0? (Repetition of digits is not allowed.)

How many numbers between 100 and 1000 can be formed with digits 1,2,3,4,5,6,7, no digit being repeated?

How many numbers can be formed fro the digits 1,2,3 and 9, if repetition of digits is not allowed?