Suppose That a Person Groups 18 Objects into Three Groups

question 7

Multiple Choice

Suppose that a person groups 18 objects into three groups in such a way that ​
6 objects are in group A.
6 objects are in group B.
7 objects are in group C.
3 objects are in both group A and group B.
5 objects are in both group B and group C.
4 objects are in both group A and group C.
2 objects are in all three groups.
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What is the probability that an object chosen at random has been placed in group A or group B?
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Definitions:

Quantity Supplied

The inventory of products or services that is put up for sale by producers at a specified rate.

Price

The amount of money required to purchase a good or service in the market.

Supply Curve

The supply curve is a graphical representation showing the relationship between the price of a good or service and the quantity of that good or service that a supplier is willing and able to supply.

Nonprice Determinants

Factors that affect demand or supply but are not related to the price of the good or service, such as consumer preferences or production technology.