A review of 520 grown-ups matured long term olds was directed in which they were asked what they did last Friday night. It found:

186 spent time with companions

186 ate pizza

37 stared at the TV and ate pizza, however didn't spend time with companions

36 stared at the TV and spent time with companions, yet didn't eat pizza

44 spent time with companions and ate pizza, however didn't sit in front of the TV

45 stared at the TV, spent time with companions, and ate pizza

98 didn't any of these three exercises

How may long term olds (of these three exercises) just sat in front of the TV last Friday night?

An overview of 1,152 vacationers visiting Orlando was taken. Of those reviewed:

274 travelers had visited the Magic Kingdom

252 travelers had visited LEGOLAND

263 travelers had visited Universal Studios

84 travelers had visited both the Magic Kingdom and LEGOLAND

52 vacationers had visited both the Magic Kingdom and Universal Studios

56 travelers had visited both LEGOLAND and Universal Studios

34 travelers had visited every one of the three amusement parks

What number of vacationers had not visited any of these three amusement parks?

In the overview of workers at a cheap food it was resolved that

9 prepared food

12 washed dishes

17 worked the sales register

5 prepared food and washed dishes

=12=

2 prepared food and worked the sales register

4 washed dishes and worked the sales register

1 did every one of the three positions

6 did none of these

Q: what number of the workers did at any rate two of these positions?

In the review of workers at an inexpensive food it was resolved that

9 prepared food

12 washed dishes

17 worked the sales register

5 prepared food and washed dishes

2 prepared food and worked the sales register

4 washed dishes and worked the sales register

1 did every one of the three positions

6 did none of these

Q: what number of representatives just worked the sales register?