The number of all numbers having 5 digits, with distinct digits is

The number of all numbers havings digits, with distinct digits is(a) 9999(b)9x'P,C(c)19P,do()P,

The number of all four digit numbers with distinct digits is

Find the number of all five digit numbers with distinct digits.

The smallest three digit number having three distinct digits is 123 (b) 101 (c) 102 (c) 201

The smallest three digit number having three distinct digits is (a) 123 (b) 101 (c) 102 (c) 201

The difference between the greatest 3 -digit number and the greatest 3 -digit number with distinct digits is