Answer:
There are 6 identical arrangements
Explanation:
The correct answer is found by getting the GCF of both numbers.
Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42
Factors of 54: 1, 2, 3, 6, 9, 18, 27, 54
The greater factor that is common between these is 6, which is the answer.
There are 6 identical arrangements.