Number of whole numbers between 1 and 1000 do not contain the digit 1, is

Question

Number of whole numbers between 1 and 1000 do not contain the digit 1, is (A) 648 (B) 720 (C) 728 (D) 800

Tardigrade Admin · Accepted Answer

Each digit in the number can be 0, 2, 3, 4, ......., 9, for a total of 93 = 729. However, we cannot have the number 000, so we subtract one to get 728

Q. Number of whole numbers between 1 and 1000 do not contain the digit 1, is

648

720

728

800

Each digit in the number can be $0, 2, 3, 4, ......., 9$ , for a total of $9^{3} = 729.$
However, we cannot have the number $000$ , so we subtract one to get $728$

Q. Number of whole numbers between 1 and 1000 do not contain the digit 1, is

648

720

728

800

Each digit in the number can be 0,2,3,4,.......,9, for a total of 93=729. However, we cannot have the number 000, so we subtract one to get 728

Each digit in the number can be $0, 2, 3, 4, ......., 9$ , for a total of $9^{3} = 729.$
However, we cannot have the number $000$ , so we subtract one to get $728$