Tuesday, 11 March 2014

Code breaking

 
The German Army have broken into the Cabinet War Rooms. To get into the safe where all the secret documents are held, they must decipher the 4-digit code for the alarm. In order to do this, the SS (Secret Police) have given them the following clues found out by their spies.
 
1. Think of the code as a pair of 2-digit numbers with the total of 100.
2. The first 2-digit number is bigger than the second.
3. Both pairs of numbers are multiples of five.
4. The two numbers have a difference of ten.
 
Therefore the code is ...
 

15 comments:

  1. 1. it can be 55+45, 81+19, 67+33 (add up to 100)

    2. it can be 81+19 because the first to digits are bigger than the second digits

    3. it can be 95+15, 75+25, 55+45

    4. it's gonna be 55+45!

    ReplyDelete
  2. deborah and mailee3:00 pm, March 11, 2014

    using clue number one it could be 27and73 or 26 and 74 or even 60and40
    using clue two 73 and 27

    looking at clue three it might be 45 and 65

    its 55 and 45

    ReplyDelete
  3. Using clue one the numbers I have picked is 6436,6040 because it is a total of 100.
    2.6436&6040
    3.6545...
    4.6545.. I GUESS

    ReplyDelete
  4. Using clue 1 the numbers could be 64, 36 , 50 50 and 66, 34.
    using clue 2 the numbers could be: 81 19 , 55 45 , 60 40
    Using clue 3 I think the numbers are: 55 45 , 60 40
    using clue 4 the number could be 55 45
    therefore the code is 55 and 45

    ReplyDelete
  5. After using clue 1 the numbers could be: 56 and 44, 50 and 50, 34 and 64
    using clue 2 the numbers could be:55 45 and 19
    using clue 3 the number5s could be:15 35 or 60
    using clue 4 the numbers could be: 55 45

    ReplyDelete
  6. 1.It can be(70+30) it can be (60+40) and (80+20) because they all add up to 100

    2.it might be (56+44) because the first 2 digits are bigger than the second.

    3. I can be (65+35),(75+25),(95+15) and (55+45)

    4. it is (55+45) which has the difference of 10

    Miss Williams I have cracked the code!

    ReplyDelete
  7. Using clue 1 it can be 73 and 27, 65 and 35, 45 and 55 because those numbers add up to 100.
    Using clue 2 it can be 73 and 27, 65 and 35, 55 and 45 because the 2 numbers are bigger than the 2nd.
    Using clue 3 it can be 55 and 45.
    Using clue 4 the answer is 55 and 45.
    5545

    Now I have changed clue number 3 both pairs are even numbers and they have a multiple of 2.

    ReplyDelete
  8. It could be 90 and 10, 36 and 64, 75 and 25.
    90 and 10, 75 and 25, 65 and 35.
    90 and 10, 75 and 25, 65 and 35.
    45 and 55, 65 and 55

    ReplyDelete
  9. 1.10+90 50+50 20+80 30+70 40+60

    2.51+49

    3.40+60

    4. ?

    ReplyDelete
  10. From clue 1 , it would be 72 and 28, 36 and 46, 44 and 56,because they all add up to 100
    From clue 2 , it would be 73 and 27, 65 and 35, 55 and 45, because the first 2 digit number is bigger than the 2nd

    I will continue later

    ReplyDelete
  11. 1. 63 and 37 48 and 52

    ReplyDelete
  12. maybe it is 45, 35 and 20
    45 35 because it is 10 bigger then the next
    and both in 5 table

    ReplyDelete
  13. it is 55 and 45 because: they are both in the 5 times table, they add to 100, they have a difference of 10 and the first number is bigger than the second.

    ReplyDelete
  14. 55 and 45 because their sum equals to 100.They have a difference of 10 and the first number is bigger than the second.

    ReplyDelete
  15. It 55 and 45 because they're both in the 5 times table, add up to 100 ; it of 10 difference and the first number is obviously bigger than the second.

    ReplyDelete