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alisha [4.7K]
2 years ago
12

A four-letter code uses the letters Z and X. Either letter can be repeated in the code. How many

Mathematics
1 answer:
Marysya12 [62]2 years ago
6 0

Answer:

Step-by-step explanation:

10? i believe so if not then one or two more

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The number of ways in which 4 squares can be chosen at random on a chess board such that they lie on a diagonal line?.
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<h3>What are permutation and combination?</h3>

A permutation is the number of different ways a set can be organized; order matters in permutations, but not in combinations.

It is given that:

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brainly.com/question/2295036

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