Write the smallest three-digit number using the digits $4, 5, 6, 9$ such that first digit is fixed as $5$ (Repetition of digits not allowed).

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564

546

569

596

answer is B.

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Detailed Solution

It is given that we have to make the smallest three-digit number using 4, 5, 6, 9.
The smallest three-digit number will be formed by smallest of the three digits from the given ones, i.e.,

4, 5, 6

.
It is also given that; first digit is fixed as

5

∴

Smallest three digits number possible is

546 .

Hence, the correct option is 2.

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