Question

A building contains 22 rooms in total. 9 of the rooms are on the ground floor 7 rooms have blue walls 4 of the rooms are on themground floor and have blue walls work out the probability

Answer 1

The probability of selecting a room on the ground floor with blue walls from a building containing a total of 22 rooms is 4 out of 22, which simplifies to approximately 18.18%.

Step-by-step explanation:

The question involves calculating the probability of a specific event occurring, given certain conditions in a building with rooms of different characteristics. To find the probability, we need to consider the total number of rooms and the number of rooms that fit the criteria of being on the ground floor with blue walls. From the data provided, there are 22 rooms in total, 9 rooms on the ground floor, and 7 rooms with blue walls. Four of these rooms are both on the ground floor and have blue walls. We can use this information to calculate the probability of randomly choosing a room with specific features.

To calculate the probability, we use the formula:

Probability (P) = Number of favorable outcomes / Total number of outcomes

Therefore, the probability of selecting a ground floor room with blue walls would be:

P = Number of ground floor rooms with blue walls / Total number of rooms

P = 4 / 22

Which simplifies to approximately 0.1818 or 18.18%.