17th January 2018, 9:04 AM
Before we get to this, it's a question on Sets (the Venn diagram stuff).
Alright so this is the question:
A group of people were asked to identify their favourite cars. The results are summarised below.
62 liked Honda,
40 liked Volvo,
5 liked GM,
2 like Honda, Volvo and GM,
3 like Volvo and GM,
20 like Honda and Volvo,
42 like only Honda and neither of the two; and
12 like none of these cars.
i) How many were surveyed?
ii) How many don't like GM?
iii) How many like Honda and GM?
iv) How many like exactly one of the three cars?
Note: Let us use the lowercase alphabets 'n' for intersect symbol, and 'u' for union.
Alright so this is the question:
A group of people were asked to identify their favourite cars. The results are summarised below.
62 liked Honda,
40 liked Volvo,
5 liked GM,
2 like Honda, Volvo and GM,
3 like Volvo and GM,
20 like Honda and Volvo,
42 like only Honda and neither of the two; and
12 like none of these cars.
i) How many were surveyed?
ii) How many don't like GM?
iii) How many like Honda and GM?
iv) How many like exactly one of the three cars?
Note: Let us use the lowercase alphabets 'n' for intersect symbol, and 'u' for union.
