The image above represents P(A).

To compute for P(A), two essential parameters are needed and these parameters are **Number of Times in Which Event A Can Occur (x) **and

**Total Number of All Possible Outcomes (N).**

The formula for calculating P(A):

**P(A)** = ^{x }⁄ _{N}

Where;

x = Number of Times in Which Event A can Occur

N = Total Number of All Possible Outcomes

Let’s solve an example;

Find the P(A) when the number of times in which event A can occur is 10 and the total number of all possible outcomes is 22.

This implies that;

x = Number of Times in Which Event A can Occur = 10

N = Total Number of All Possible Outcomes = 22

**P(A)** = ^{x }⁄ _{N
}P(A) = ^{10 }⁄ _{22}

Dividing the numerator and denominator by **2**

P(A) = ^{5 }⁄ _{11}

P(A) = 0.45

Therefore, the **P(A)** is **0.45.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the P(A).

To get the answer and workings of the P(A) using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 1,500 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Probability**** **under **Mathematics****.**

Now, Click on **P(A) **under **Probability**

The screenshot below displays the page or activity to enter your values, to get the answer for the P(A) according to the respective parameters which are the **Number of Times in Which Event A Can Occur (x) **and

**Total Number of All Possible Outcomes (N).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Number of Times in Which Event A Can Occur (x) **is

**10**and

**Total Number of All Possible Outcomes (N)**is

**22**

**.**

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the P(A) and presents the formula, workings and steps too.