Answer:
The probability of getting a sum less than or equal to 4 is 1/6.
Step-by-step explanation:
When two dices are rolled, the number of outcomes are: 6*6 = 36 which is written in ordered pairs consisting of outcome of both dices.
When two dices are rolled, the number of sample space elements is:

Let A be the event that the sum of outcomes is less than or equal to 4:

That implies

The probability of getting sum less than or equal to 4 will be:

Hence,
The probability of getting a sum less than or equal to 4 is 1/6