Question 1147211
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Given:

1.  D + D + D = F
2.  H + H = B
3.  G + B +E = F + A +C
4,  J + A = CC
5.  F x D = KG
6.  B / H = K 
7.  D x H = CK
8.  A x H = KE
9.  J / D = K
10. D/J = H/B<br>
Analysis…<br>
From 4, C is 1<br>
From all the given information together, E and G are the only possible letters for 0.
If G is 0, then 5 tells us either D or F is 5; but 1 tells us neither D nor F can be 5.
So G is not 0; therefore E is 0.<br>
Since E is 0, 8 tells us either A or H is 5.
But 10 tells us H can’t be 5.
So A is 5.<br>
Then 4 tells us J is 6.<br>
Then, since J is 6, 9 tells us D and K are, in some order, 2 and 3.
But D can’t be 2, because 1 would make F 6, but J is 6.
So D is 3; and so K is 2.<br>
Then 1 tells us F is 9.<br>
Then 5 tells us G is 7.<br>
8 tells us H is 4.<br>
6 tells us B is 8.<br>
His code is<br>
A - K - B - J - C - H - D - G - E - F = 5286143709