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.
The given digits are 3,6,1, 8, 4.
To form the smallest five digit number, arrange the digits in ascending order. 1 < 3 < 4 < 6 < 8.
Hence the smallest number which can be formed is 13468.