Question

which of the following pairs of goods includes a good that is excludable and rival in consumption as well as a good that is not excludable and not rival in consumption?
"tablet computer, gym membership at a gym that always has plenty of open equipment and classes".
"tablet computer, national defense".
"congested nontoll road, national defense".
"online music subscription, streetlight".

Answer 1

Tablet computer - it is a private good since it is excludable (one have to pay to use it) and rival in Consumption (one person's Consumption of tablet computer reduces the amount available to others at that point of time).

Gym membership at a gym - it is also a private good that has both the excludable and rival in Consumption properties. Though this gym has open equipments and classes, but one has to pay for the membership to get benefitted from it.

National defense- It is a public good as it has non excludable (you don't have to pay to get benefitted from national defense) and non rival in Consumption ( if one person is getting benefitted from national defense, it doesn't reduce the benefit available to other Nationals).

Congested non toll road - It has the properties of non excludability (since it's a non toll road) and rival in Consumption (as it's a congested one).

Online music subscription- It has the property of excludability (since you have to pay to purchase subscription) and non rival in Consumption.

Streetlight - It has both the properties of non excludability and non rival in Consumption.

Answer: 'tablet computer , national defense '

Answer 2

Tablet computer