Acircle and a square can intersect at how many points

If the circle has the same center as the diagonals of a square and the radius of the circle is smaller than 1/2 the diagonal of the square but larger than 1/2 the length of the side of a square, then there are 8 points of intersection -- 2 at each corner of the square.

If the radius of the circle is smaller than 1/2 the side length of the square and the center is as described above, there are no points of intersection.

If the circle is located outside the square it can have 1 tangent point or 2 intersection points depending on the location conditions of the circle in relation to the square.

The answer is B, 7/10.

There are two options to this probability: the experimental probability that they like pepperoni pizza and the experimental probability that they don't.
The two probabilities are related by the fact that when you add the two together the probability becomes 1, or 100%.

Since the odds that they do like pepperoni pizza is 3/10, the odds that they don't is: 


Thus, your answer is B, 7/10.