I need a little help. This is a probability question about the Briggs Myers personality test and if married couples choose similar or different personality types in their mates.

Number of Similar/ Number of Married Couples

All four/ 34

Three/ 131

Two/ 124

One/ 71

None/ 15

Use the data to estimate the probability that they will have 0, 1, 2, 3, or 4 personality preferences in common.

*My question is for those who have 4 in common, would 1, 2, 3 not be mutually exclusive or are they independent of each other? Thanks.