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geniusboy [140]
3 years ago
13

In how many ways you can form a combination of 3 numbers and 3 letters in a plate number if repetition is allowed

Mathematics
1 answer:
Lapatulllka [165]3 years ago
5 0

Your plate numbers will be like

xxxyyy

where each x is a number, and each y is a letter. Assuming you can use all numbers and letters, you have 10 possible choices for every x place (all the digits from 0 to 10) and 26 possible choices for every y place (all the letters from a to z).

So, if you multiply all the possible choices, you have

xxxyyy \to 10\cdot 10 \cdot 10 \cdot 26 \cdot 26 \cdot 26 = 10^3 \cdot 26^3 = (10\cdot 26)^3 = 260^3

So, there is a total of

260^3 = 17,576,000

possible plate numbers with 3 letters and 3 numbers, if repetitions are allowed.

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