digits.
15. Write all possible 3-digits numbers using the digits 5, 0, 4 when.
(1) Repetition of digits is not allowed.
(2) Repetition of digit is allowed
Answers
Answered by
0
Answer:
Case 1.
Number of ways of 3 digit number = P(3, 3) - P(2, 2) = 3! - 2! = 6 - 2 = 4
Case 2.
Using Fiundamental Theorem of Arithmetic
Unit place can be filled by any one of 3 digits (5, 0, 4) in 3 ways.
Tens place can be filled by any one of 3 digits (5, 0, 4) in 3 ways.
Hundred place can be filled by any one of 2 digits (5, 4) in 2 ways.
Number of ways = 2 × 3 × 3 = 18
Answered by
1
Answer:
2×3×3 = 18
answer is 18
ok.....
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