Tough Puzzles & Brain Teasers
Puzzles on logic and mathematics that will make you scratch your head.
77 Members
Join this group to post and comment.
Aswini Vi
Computer Science
22 Jan 2019

# Crack the number lock code.

A number lock had 3 digit key.Hints for key are listed below.

>> 6,8,2 - One number is correct and well placed.

>>6,4,5 - One number is correct but wrong place.

>>2,0,6 - Two numbers are correct but wrong places.

>>7,3,8 - Nothing is correct.

>>7,8,0 - One number is correct but wrong placed.

3mos ago

3mos ago

0 5 2

From statement 1&4, one of 2 and 6 is right. From statement 1&2, 2 is right and is in the third place. 6 is wrong.

From statement 3,  0&2 must be correct and 0 must be the first.

From statement 2, 4 cannot be right. So 5 must be right and it should be the middle number.

2mos ago

0 5 2

Aswini Vi
Computer Science
2mos ago

2mos ago

Ans : 0 5 2

From 1,3 lines 2/6 is correct.

From (4) 7,3,8 are not in code

so From (5) 0 is correct but not in correct place.

from (2) 5 is correct and not in correct place.

So by arranging we get 0 5 2