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Byju's Answer
Standard VI
Mathematics
How Many Numbers Can Be Formed Using a Certain Number of Digits?
How many thre...
Question

How many three-digit numbers can be formed using 1, 7, and 8, without repetition?

A
6
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B
3
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C
8
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D
18
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Solution

The correct option is A 6
178, 187, 781, 718, 817, 871. Therefore, '6' three-digit numbers can be formed.
Hence, the correct option is (a).

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