if no digit appears more than once how mang 2-digit numbers can be formed from the digits 1,3,5, and 7?
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Answer:
12
Step-by-step explanation:
You can choose the first digit 4 ways.
After that and since we want no repeats, we can choose the third digit 3 ways.
4 times 3 =12
Answer:
12 Mark me as brainliest!!
Step-by-step explanation:
how many 2-digit can be formed from the digits...
Combine all the digits without repeating
13, 15, 17
31, 35, 37
51, 53, 57,
71, 73, 75
12 digits