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Showing posts with label puzzles for adults. Show all posts
Showing posts with label puzzles for adults. Show all posts

Crack the spy code

The Spy changed the password on his smartphone.

Can you find the 4-digit code?



To solve this puzzle you need to combine math and reasoning skills.
Spy series "Crack the Code"
By Panos Kalliantasis
 
 
If you do not succeed, you can find the answer and the detailed solution below.
Based on hint 2

AB is divisible by 5
The digit B can be 5 or 0

Based on hint 3

BC is divisible by 9
5C or 0C is divisible by 9

The sum of digits
5+C or 0+C must be multiple of 9
Since C is digit 0,1,2,3,4,5,,6,7,8,9
he only multiple of 9 can be 9
9x1=9
So 5+C=9 C is 4
Or
0+C=9 C is 9
BC can be 54 or 09
 
Based on hint 1
A number is divisible by 4 when its
last two digits are divisible by 4
ABCD number is divisible by 4 when
its last two digits are divisible by 4,
so CD is divisible by 4
4D or 9D is divisible by 4
4D can be 40 44 or 48
9D can be 92 or 96
BCD can be
540 544 548 092 096
The code ABCD can be
A540 A544 A548 A092 A096
Based on hind 4
A+B+C+D =25
The only one that can give a sum of
25 is A548
A+5+4+8=25 A+17=25 A=8
Therefore the code ABCD is 8548


Answer
Correct answer is 8548
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How many boys were missing from the lesson? Math puzzle

A math puzzle for teens

                                       Practice in number theory                                                                                                      

                  
                                                                                              

How can this happen? Mathpuzzle

An easy puzzle that can be confusing and difficult to answer.
A logic math puzzle for everyone.

Family business puzzle
How can this happen?


What is the propability the sheet is a sword?

Brain teasers and puzzles
Math probabilities


We randomly select a sheet from a pack cards?
What is the probability that the sheet is an ace?
What is the probability that the sheet is a sword?








Answers
P(Ace)=4/52

P(sword)=13/52

Can you crack the security code?



Can you crack the security code and enter the computer?
A different crack the code,only for genius.

A father lock the computer and told his son, if he wanted to play, he had to hack and find the 4-digit  code.

A cryptarithm puzzzle: Beer+and =sodas

                This puzzle of words that have   entered a  mathematical formula and we need to find the digits that will replace the letters, so that the mathematical equation is true.

Try your skills with this cryptographic  math puzzle

A alphametic puzzle:No No Too/Late

Which number corresponds to the late?

An alphametic puzzle (also sometimes known as a cryptarithm) is a type of puzzle where words are put together into an arithmetic formula such that digits can be substituted for the letters to make the formula true.


A hard calculation puzzle

 Can you solve this hard math puzzle?
Using only the numbers 2,3,5 with mathematical operations, get the number 1133.
You can use addition, subtraction, multiplication, division and exponents,

but the single numbers will be 2.3.5

Crack the card code

 Crack the card code and get the money.

The spy received by mail a envelope with a payment card and an encrypted note for the four-digit card code.

 What is the four-digit code that unlocks the card?

Find the code and unlock it.

                                      
Can you crack  the password and unlock the mobile phone?

 Alexander does not remember the password on his mobile phone.

But he has made a cryptographic note and finds it difficult

Try to find the code and help Alexander unlock the phone


Crack the code-logic math puzzle

Crack the code  is a series of puzzles to turn your mind.


 It's a challenge for genius minds and to solve them you need to have reasoning skills and logical abilities


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<h2>Complete the number series158</h2>

 Number series for competitive exams Can you complete the following number series?