Math, asked by nitaronghe9, 10 months ago

how many 4digit can be made by using the digits 123789
1) Repetition of a digit is allowed
2) Repetition of digit is not allowed

Answers

Answered by radheshyampatil7773

0

Answer:

1237 9873 2379 1this is wrong and write

Answered by Anonymous

0

Answer:

1. Repetition allowed = 6x6x6x6

= 1296

2. Repetition not allowed = 6x5x4x3

= 360

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