1. Law is a rule of conduct means

1. It defines acts or omissions punishable by law
2. It recognizes the fundamental rights of individual
3. It regulates the activities of members of society

2. An important element of law that acts as a deterrent to non-observance of the law

1. Rule of conduct
2. Obligatory force
3. Sanctions

3. X paid Y his indebtedness by mistake.

1. Y should return the amount to X
2. Y should return the amount upon demand
3. Y should return the amount with interest