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

How many 2- digits numbers can be formed from the digits 8,1,3,5 and 4 assuming repetitions of digits is not allowed?

How many non-zero numbers can be formed using the digits 0,1,2,3,4 and 5 if repetition of digits is not allowed?

How many 2- digits numbers can be formed from the digits 8,1,3,5 and 4 assuming repetition of digits is allowed?

How many four digit numbers formed by the digits {1,2,3,….9} if repetition of digits is not allowed

How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?

How any three digit odd numbers can be formed by using the digits 1,2,3,4,5,6 if; The repetition of digits is not allowed? The repetition of digits is allowed?

How many numbers of four digits can be formed with the digits 1,2,3,4, and 5? (if repetition of digits is not allowed).

How many numbers can be formed with digits 3,4,6,and 8 without repetition ?

How many numbers can be formed from the digits 1, 2, 3, 4 when repetition is not allowed?

How many numbers can be formed from the digits 1, 2, 3, 4 when repetition is not allowed?