As early as the end of March, riEriNeeman posted this photo on Twitter and like many things online - even this "simple" quiz spread in the form of waves and reached us. According to online posts, the exercise has captivated many people, as it seems difficult, but requires only a little concentration.
Saw this puzzle from a friend.
- Eri Neeman (@erineeman) March 30, 2020
What's the correct combination? ? pic.twitter.com/2Z0nzBlu8K
Exercise :
682: A number is also correct in its place.
614: A number is correct, but in the wrong place.
206: Two numbers are correct, but both are in the wrong place.
738: All numbers are incorrect.
380: A number is correct, but in the wrong place.
Any ideas?
Step-by-step solution:
Step 1 - "738: All numbers are incorrect"
We start with this code, which gives us more data. So 7,3,8 are excluded. .
Step 2 - "380: A number is correct, but in the wrong place"
We know that 3 and 8 are wrong, which makes 0 the correct digit. But 0 is in the wrong place, so it has to be in the first or second place.
Step 3 - "206: Two numbers are correct, but both are in the wrong place"
We know that 0 is correct, so 2 or 6 is left. Since it says that both numbers are in the wrong place, we already know that 0 cannot be in the second place. So it's in the first.
The first digit was solved: 0 [x] [x]
Step 4 - "682: A number is correct and in its place"
Here, 6 is placed in the first place, for which we already know it belongs to 0. So the number 6 is wrong. Automatically 2 is correct (because 8 was excluded in the first step).
So so far the code is 0 [x] 2
Step 5 - "614: A number is correct, but in the wrong place"
Number 6 is excluded and we are left with only 1 and 4. Number 4 is in place of number 2. So 4 is correct, but in the wrong place .
FINAL CODE: 042
