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In this puzzle, a number lock has 3 digit key and you will have to find out the correct combination to open the lock.

+1 vote
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In this puzzle, a number lock has 3 digit key and you will have to find out the correct combination to open the lock.
Can you solve this?
enter image description here

posted Apr 5 by Deepak Chitragar

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2 Answers

0 votes

042


Line 4- excludes 7, 3 & 8
Line 5- 0 is correct but wrongly placed
Line 3- 0 is correct-> goes to 1st place as wrongly placed in 2nd and 3rd place
Line 1 and 3- 2 is correct and well placed--> 3rd place --6 excluded
Line 2- 1 is excluded and 4 is correct- but wrongly placed-> 2nd place
We get key 042 as a result

answer Apr 5 by Hanifa Mammadov
0 votes

We have to select 3 digits from 0, 1, 2, 3, 4, 6, 7, & 8.
Analysing first two statements, digit 6 is ruled out. Then statement at No. 5, rules out digits 7, 3 & 8.
Since 6 & 8 are ruled out, according to statement 1, Digit 2 is one of the correct digits and is at the correct place.
According to the third statement, two numbers are correct but wrongly placed. Since number 6 is already ruled out, remaining numbers are 2 & 0. That means 0 comes in first place and 2 is already in the third place. Now we have to choose one number from out of 1, 3 & 4 which will be placed at No. 2 position. Since it is stated in the second statement that out of 6, 1 & 4, one number is correct but wrongly placed and since it is proved that No. 2 occupies the third position, only number remains is 4 and it must at number two position, the answer we arrive at is 042.

ANS: 042

answer Apr 12 by anonymous



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