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how many 4 digit numbers can be formed from the digits 1,3,5,6,8 and 9 if nk repetition is allowed
Answer:
The 4th place digit (ones) must be even and is thus restricted to 2 possibilities, 6 or 8. Remaining digit places (thousands, hundreds, tens) are then restricted to 5, 4, 3 digit choices, respectively. In response to the question, there are 5*4*3*2 = 120 distinct permutations of 4 digit even numbers possible to be formed from the digits 1,3,5,6,8,9.
Step-by-step explanation:
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