Question

The smallest number of different digits formed by using the digits 3 1 0 5 and 7 is________.​

Answer 1

Given :- The smallest number of different digits formed by using the digits 3 1 0 5 and 7 is________.

Solution :-

→ Total digits in ascending order = 0, 1, 3, 5 and 7 = Total 5

now, we need to make smallest five digit number with given digits .

since a five digit number we can not start with 0 at left most side . so we will start with second smallest digit that is 1 and then we will use 0 .

so,

→ Smallest five digit number will be :-

• 1 = Ten thousand place .
• 0 = Thousand place.
• 3 = Hundred place .
• 5 = Tens place .
• 7 = unit place .

then,

→ The required smallest five digit number will be = 10357 .

[ Note :- if we need smallest number using all digits we can write 01357 also which can be read as 1357 only. ]

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Answer 2

Given : digits 3 1 0 5 and 7

To Find : The smallest number of different digits formed by using the given  digits  

Solution:

As smallest number of different digits  to be formed hence we need to use 0 as well .

And there are 5 digit so number will be 5 digit number

And  0 can not be used at highest place value

Highest place value should have least Digit

so 1st digit will be  1

Then 0 can be used

further similarly 3 , 5 and 7 can be used

so  smallest  number formed is  10357

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