How many 5-digit numbers can you form using the numbers 8 and 9

Question

madeleinejames20 · Accepted Answer

To find out how many 5-digit numbers can be formed using the numbers 8 and 9, we can consider the following:
Since we are forming 5-digit numbers, we need to determine the number of choices for each digit from left to right.
For the first digit (the leftmost digit), we have 2 choices: 8 or 9. Thus, we can represent this choice using

2

.
For the second digit, third digit, fourth digit, and fifth digit, we also have 2 choices (8 or 9) for each digit. So, we can represent each choice using

2

.
Since the digits are chosen independently, we can use the multiplication principle to determine the total number of 5-digit numbers that can be formed. We multiply the number of choices for each digit:

2 \times 2 \times 2 \times 2 \times 2 = 2^{5}

How many 5-digit numbers can you form using

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