Question

Using the list of numbers and their accompanying codes, can you decipher the last code and determine the number on the last line?

            Number             Code
             589                521
             724                386
             1346               9764
               ?                485

Answer 1

Answer: 625
The number is 625
The rule is the number digit + the code digit = 10
So for 589 the code is 521 (5+5=10, 8+2=10, 9+1=10)
for 724 the code is 386 (7+3=10,2+8=10,4+6=10)
for 1346 the code is 9764 (1+9=10,3+7=10.4+6=10,6+4=10)
for 485 the code is 625 (4+6=10,8+2=10,5+5=10)....
so, The number is 625

Answer 2

The number is 625
The rule is the number digit + the code digit = 10
So for 589 the code is 521 (5+5=10, 8+2=10, 9+1=10)