1. All impulse buyers are consumers with credit cards.

All shopaholics are impulse buyers.

Therefore, all shopaholics are consumers with credit cards.

2. No pediatricians are individuals who jeopardize the health of children.

All faith healers are individuals who jeopardize the health of children.

Therefore, no faith healers are pediatricians.

3. Some individuals prone to violence are not men who treat others humanely.

Some police officers are individuals prone to violence.

Therefore, some police officers are not men who treat others humanely.

4. Some ATM locations are places criminals lurk.

All places criminals lurk are places to avoid at night.

Therefore, some places to avoid at night are ATM locations.

5. No corporations that defraud the government are organizations the government should deal with.

Some defense contractors are not organizations the government should deal with.

Therefore, some defense contractors are not corporations that defraud the government.

Use Venn diagrams to determine whether the following standard-form categorical syllogisms are valid from the Boolean standpoint, valid from the Aristotelian standpoint, or invalid. Then, identify the mood and figure, and cross-check your answers with the tables of valid syllogisms found in Section 5.1.