The number of positive numbers of not more than 10 digits formed by using 0,1,2 and 3 is (A) 18 (B) 24 (C) `4^10, 3^10` (D) `4^10-1`

The number of even numbers of four digits that can be formed using the digits 0, 1, 2, 3, 4 and 5 is

How many 10 -digit numbers can be formed by using digits 1 and 2

The total number not more than 20 digits that are formed by usingd the digits 0,1,2,3, and 4 is a.5^(20) b.5^(20)-1 c.5^(20)+1 d.none of these

Number of 7 digit possible number whose sum of digit is equal to 10 by using 1,2,3

The number of different mastrices which can be formed using 12 different real numbers is (A) 6(12)! (B) 3(12)! (C) 2(10)! (D) 4(10)!|