I was asked this question. The question was about finding a number and three clues were given which are as follows.

1. If this number is multiple of 5, it would lie between 1 to 19.
2. If this number is not multiple of 8, it would lie between 20 to 29.
3. If this number is not multiple of 10, it would lie between 30 to 39.

I have tried a lot, but couldn't find any solution. Hope someone can help me. Thanks.