40 as the numerator and 64 as the denominator which can be simplified to 5 over 8
20 degrees-> acute since less than 90
27 degrees-> acute since less than 90
133 degrees-> obtuse since more than 90
Factors of 6 are : 1,2,3 and 6.
Let us find probability of getting the number that is a factor of 6.

Now let us find probability of getting a number more than 2 (3,4,5,6).

We can see that these two events are mutually inclusive events. We can find probability of mutually inclusive events by formula
.
Now we will find probability of getting the number is a factor of 6 or more than 2 using above formula.
Therefore, our probability will be 1 and this scenario represents mutually inclusive events.
1 is right
2 is C
And 3 is right
I believe the answer is C, x-3.