Page 52 - UKCAT 2017

PRACTICE QUESTIONS
Decision Making
DM16
There are 48 people in a room. They are asked what they enjoy doing in their spare time.
29 of the people say they enjoy reading.
9 of the people say they enjoy watching television.
DM17
Martin’s journey home from work involves taking the bus to the station, catching the six o’clock train and then a short walk to his house. If the bus is late, he has to catch a later train.
On 10 days out of the past 50, the bus has not reached the station in time for him to catch the six o’clock train. Similarly on 10 days out of the past 50, the six o’clock train has arrived late at Martin’s home station.
Is it more likely than not that Martin will get home on time tomorrow?
A Yes, the buses and the trains
Which of the following MUST be true?
A
B
C
D
Between 10 and 19 (inclusive) people neither like reading nor like watching television.
There are exactly 20 people who like reading but do not like watching television.
There are more people who do not like reading than who do not like watching television.
There are 38 people who like either reading or watching television.
each meet the requirements of
the timetable 40 out of 50 times respectively, so he should get home on time tomorrow.
B Yes, if the bus is late, the train may be too, so he would get home on time.
C No, on 20 occasions over the 50 days either the train or bus has been late, so it is unlikely he will get home on time.
D No, every day is different so predictions are no more than guesses and wholly unreliable.
52 UKCAT Of cial Guide 2017