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Q.

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


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a

564

b

546

c

569

d

596 

answer is B.

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Detailed Solution

Given numbers are 4, 5, 6 and 9.
Here the number at first digit is 5.
So, the three-digit numbers we can make are,
569, 596, 546, 564, 549 and 594.
So, there are 6 three-digit numbers are possible when the reputation of number is not allowed.
In these 6 numbers, 546 is the smallest number.
Hence, the correct option is 2.
 
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