A pizza pie has 6 slices. 5 of the slices are equal
in size, except for the only slice with sausages,
which is twice as big as each of the other slices.
Without looking, John randomly picks a slice
by pointing somewhere in the pie. What is the
probability that John will not pick the sausage
slice?

Step-by-step explanation:

In my picture I made 6 slices, with one slice twice as large as the others.

Pretend that we cut the sausage slice in half. Then there would be 7 slices total.

We want to find P(Not Sausage).

Well since we sliced the big slice in two, we have 7 slices total. There are 5 slices without sausage.

The probability of getting a slice without sausage would then be 5/7.