Question

Write the smallest 3-digit numbers using each of the following digits only once.

i) 5, 7 and 1 -

ii) 0, 2 and 9​

Answer 1

Answer:

$\large\boxed{\sf{(i)157}}$

$\large\boxed{\sf{(ii)209}}$

Step-by-step explanation:

To write the smallest 3 digit numbers.

(i) 5, 7 and 1

• First of all, smallest of these numbers is written.

Therefore, 1 will come at hundred place.

• Now, the next greater number will be written.

Therefore, 5 will come at tens place.

• In the last, largest number will be written.

Therefore, 7 will come at ones place.

Hence, required number is 157.

(ii) 0, 2 and 9

• First of all, smallest number should be written.
• Clearly, 0 is the smallest of all.
• But, 0 can't be written as it will lead to a two digit number.
• Therefore, number greater than 0 will ve written first.

Therefore, 2 will come at hundred place.

• Now, 0 can be written after 2.

Therefore, 0 will come at tens place.

• In the last, largest of these numbers will be written.

Therefore, 9 will come at ones place.

Hence, required number is 209.