• Member for 1 year, 8 months
  • Last seen more than a month ago
How many 4-digit odd numbers can be formed using the digits 0, 1, 2 and 3 only if the repetition of the digit is not allowed?
0 votes

The reason why the answer is (2)(2)(1)(2) is because First digit: Cannot be 0, so there are three remaining numbers 1,2,3. But you must reserve one number (1 or 3) for the last digit, so there are ...

View answer