how many 3 digit numbers can be formed from the digits 0, 5, 7, 9, if the repetition is allowed
Answers
Answered by
0
Answer:
0,1,2,3,4,5,6,7,8
Repetition allowed
Number of digits =9
=9×9×8
=81×8
=648
Note : if the question is 0,1,2,3,4,5,6,7,8,9
=9×9×10
Then the answer is 900
Similar questions