I beleive 144=2 is the answer.
If you have to divide that to get 1 number it would be 72.
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Exactly one activity:
246None of the activities :
1At least one activity:
74Snowboarding and Ice skating but not skiing:
5Snowboarding or ice skating but not skiing:
132.
Only skiing :
119.
The diagram is in the attachment.
The number would stay the same because, for example, 6 - 0 can't be 0 so it would be 6.
0.735 expressed as a fraction is 3/8
