Find the number of all the possible 3-digits numbers which can be formed by the digits 4, 6, and 8, if
the repetition of the digits is not allowed.
By using the numbers 4,6and 8 without repeating the digits, we can get 3-digit numbers as follows:
468,486,648,684,846,864
Write all possible two-digit numbers that can be formed by using the digits 2,3and4. Repetition of digits is not allowed. Also find their sum.
Write all possible two-digit numbers that can be formed by using the digits 3 and 5. Repetition of digits is not allowed.
Find the smallest five digit number which can be formed using the digits 3, 6, 1, 8 and 4 if the repetition of digits is not allowed.