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Crack the code puzzle brainteaser

It is always fun to play with crack the code puzzles. Some puzzles come with numbers to play with so some others come with pictures where you need to find out the correct code.

Here are some of these puzzles I published earlier. Try these out, I am sure these will challenge you.

CAN YOU CRACK THE CODE AND UNLOCK THE LOCK?
CAN YOU DECIPHER THE CODE TO OPEN THE DOOR?
BRAINTEASER – CRACK THE CODE
TWELVE SIX SIX THREE TEN PASSWORD RIDDLE
PUZZLE – WHAT DOES THIS MESSAGE SAY?

Crack the code (3 Digit)

crack the password puzzle


CRACK THE CODE!

Equation1: 726 One number is correct and well placed
Equation2: 329 One number is correct but wrong placed
Equation3: 653 One number is correct and well placed
Equation4: 948 One number is correct but wrong placed

Each of the above hints have one thing in common that one number from these 3 digit numbers is correct. Now, you need to find out what 3 digit numbers are and the correct place for these numbers.

Answer: 7 8 3

Crack the Code Answer Explanation

Let’s try to break the code 🙂

You will need to check all 4 equations every time to see what holds valid.

Step1 : Find All unique numbers

First thing is to check all available numbers which are 2,3,4,5,6,7,8,9

Step2: Check equations with common numbers and try to find numbers as per place condition

Since we have to crack a 3 digit number and have 4 equations, it is clear that at-least 2 equations should have a common number.

Equation1 and Equation3 have a common number as 6 however it is told that number is at the correct place so number 6 cannot be part of code since in both equations it is at different places. So, now available numbers are 2,3,4,5,7,8,9

Equation1 and Equation2 have a common number as 2 however the other statement of place is contradicting so now it is clear that number 2 also cannot be part of code. So, now available numbers are 3,4,5,7,8,9 . Also, since we know that numbers 2 and 6 cannot be part of the code so from the first equation, we now know that number 7 would be part of code and it is well placed in first position.

Now, we have code as 7 _ _

Step3: Assume a number to be part of code and see how it fits with all conditions

Now, we need to assume a number and see how it works.

From Equation 3, we know that only 5 or 3 can be part of code. So let’s assume 5 to be code which is well placed so it would be in 2nd position. Then only position left is third since we chose 5, so 3 cannot be part of code, from Equation 2 only other number left is number 9 but then it cannot be on 3rd position as per Equation 2 which makes it clear that number 5 can never be part of code.

So it clears that using Equation3 only number which can be part of code is 3 and it is well placed.

Now, we have code as 7 _ 3

From last equation, we have number 9,4 and 8. 9 cannot be part of code, since we already used number 3 from Equation 2. Number 4 cannot be part of code also, since if it wrong placed then only position available for it is 1st or 3rd however both are already occupied which leaves number 8 and that only on 2nd position.

Now, we have code as 7 8 3


Keywords: crack the password puzzle, crack the code answers, crack the code puzzles, crack the code lock, crack the code puzzle

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By Kumar

Hi All, I am Ramesh Kumar, author of this blog. I am an IT engineer. I love puzzles and riddles so I decided to publish the same for others like me. If you like puzzles then do subscribe to my email listing. You can also follow me through the website Facebook page . If you like to contact me then use the contact page form, I will reply to your emails ASAP. Thanks

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