Apair of fair dice is cast. what is the probabiliy that at least one of the numbers falling uppermost is a 1

The probability that at least one of the numbers falling uppermost is a 1 is

Step-by-step explanation:

If a pair of fair dice, lets say diceA and diceB, is cast:

At least one of the numbers falling uppermost is a 1 can happen in three different ways:

We should calculate all the 3 probabilities and sum them up.

1) =

2) =

3) =

Then the probability that at least one of the numbers falling uppermost is a 1 is:

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3