## Task 3 - 200613

Determine from the set of all natural numbers from 20 to 39 those which are divisible by the product of their two digits!
As the following table shows, only the numbers 24 and 36 have the required property.

| Number | Product of Digits | divisible? | Number | Product of Digits | divisible? |
| :---: | :---: | :---: | :---: | :---: | :---: |
| 20 | 0 | no | 21 | 2 | no |
| 22 | 4 | no | 23 | 6 | no |
| 24 | 8 | yes | 25 | 10 | no |
| 26 | 12 | no | 27 | 14 | no |
| 28 | 16 | no | 29 | 18 | no |
| 30 | 0 | no | 31 | 3 | no |
| 32 | 6 | no | 33 | 9 | no |
| 34 | 12 | no | 35 | 15 | no |
| 36 | 18 | yes | 37 | 21 | no |
| 38 | 24 | no | 39 | 27 | no |