Securinets-ctf-2015-Logic1

logic 100

Hint :

1 + 3 = 9

2 + 5 = 16

4 + 9 = 30

7 + x = 29

6 + 5 = y

Epreuve : Mathématiques

1 + 3 = 9--------------------------- 1*3 + 3 *2=9

2 + 5 = 16--------------------------- 2*3 + 5 *2=16

4 + 9 = 30--------------------------- 4*3 + 9 *2=30

7 + x = 29--------------------------- 7*3 + x *2=29

 6 + 5 = y--------------------------- 6*3 + 5 *2= 28

21+2x=29------------->x=(29-21)/2---------------->x=4

6 + 5 = y --------------> 6*3 + 5 *2= 28----------->y=28

Flag format is x-y

Final Flag is  :  4-28