I found some riddles, can you solve them?
1. If you went to bed at 8:00PM, wound the clock and set the alarm to get you up at 9:00AM, how many hours of sleep would this permit you to have?
2. Some months have 30 days, some have 31, but how many have 28?
3. Divide 30 by ½, add 10. What is the answer?