Question

write all possible 3 digit number using 3 , 1 and 5​

Answer 1

Answer:

315, 513,351,531,135,153

Answer 2

Answer:

The given digits are 1,3,5 and repetition of digits is not allowed.

The one-digit numbers that can be formed are 1,3 and 5.

We are required to write 2−digit numbers.

Out of the given digits, the possible ways of choosing the two digits are

1,3;1,5;3,5

Using the digits 1 and 3, the numbers are 13 and 31.

Similarity, Using the digits 1 and 5, the numbers are 15 and 51.

Using the digits 3 and 5, the numbers are 35 and 53.

Hence, all possible 2−digit numbers are

13,31,15,51,35,53

Now, we are required to write 3-digit numbers using the digits 1,3,5 and the repetition of the digits is not allowed.

Keeping 1 at unit's place, 3−digit number obtained are 351 and 531.

Keeping 3 at unit's place, 3−digit number obtained are 153 and 513.

Keeping 5 at unit's place, 3−digit number obtained are 315 and 135.

Hence, all possible 3−digit numbers are : 315,351,153,135,531,513

All possible numbers using the digits 3,1 and 5 are: