# How do I solve Question 42, Level 5 in Think Different?

I'm a bit stuck on Question 42, Level 5, which has the following number puzzle:

```53 (3) 59
92 (4) 98
34 (2) 38
71 (?) 79
```

I know I need to solve for the question mark, but I'm not sure what the pattern is or even where to start. Does anyone know what to do?

• Note that while we can help, we like to see prior effort by the asker. That way, we don't feel like we're being used. Dec 1 '17 at 15:54
• This question could also have worked on puzzling.stackexchange.com Mar 5 at 13:32

If you have numbers X, Y, and Z, it looks like the trick is to

multiply the second digit of X by Y then append the result to the first digit of X to get Z.
50 + (3 * 3) = 59
90 + (2 * 4) = 98
30 + (2 * 4) = 38

If this is the case, the answer is

? = 9

9.

Take the last digit of the numbers and divide the right number by the left one.

```53 (3) 59 -> 3 9 -> 9 / 3 = 3
92 (4) 98 -> 2 8 -> 8 / 2 = 4
34 (2) 38 -> 4 8 -> 8 / 4 = 2
71 (?) 79 -> 1 9 -> 9 / 1 = 9```