What is Manisha's house number?

Question

Manisha's new house number has three digits. When she challenged her friends to guess it, they tried: 135, 780, 785, and 732.

"That's amazing," Manisha said. "You've each guessed exactly one digit correctly and in its right place!"

What is Manisha's house number?

Answer 1

182

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Numbers are:
135, 780, 785, 732
Let the number be xyz
1. The first digit is 1, if it was 7 then 3 of them would have guessed the right digit, then the number must be 2 digit not 3. So number starts with 1
2. The second digit options are 3 and 8. 3 is excluded because of 135 has 1 and 3, one person have only guessed one correct number so it lives us with 8.
3. The third digit options are 5, 0 and 2. It can't be 5 because of 135 or 785 (2 digits guessed correctly- 1&5 or 8&5). It can't be 0 as per same logic- 780, two digits 8&0 guessed correctly. This leaves us with 2. So the number is 182- each of Manisha's friends guessed one correct digit.