Answer:
A. 6
Step-by-step explanation:
Let n represent number of tables.
We have been given that to furnish a room in a model home, an interior decorator is to select 2 chairs and 2 tables from a collection of chairs and tables in a warehouse that are all different from each other. There are 5 chairs in the warehouse and if 150 different combinations are possible.
Since 2 chairs are being selected from 5 chairs, so we can choose 2 chairs in ways.
There are n tables and we can choose 2 tables from n table in ways.
We can represent our given information in an equation as:
Since tables cannot be negative quantity, therefore, 6 tables are in the warehouse.