As of the end of the second quarter of 2016, Facebook had approximately l .71 bi
ID: 3032955 • Letter: A
Question
As of the end of the second quarter of 2016, Facebook had approximately l .71 billion users worldwide and as of June 2016, three of the most popular games on Facebook amongst daily active users (#1, 4, and 5 respectively if you are interested) were Candy Crush Saga (often just referred to as Candy Crush), Farm Heroes saga (often just referred to as Farm Heroes), and 8-Ball Pool. Suppose that 20,000 daily Facebook users were asked whether or not they played each of the three games. The survey found that 521 played Candy Crush, 433 played Farm Heroes, 326 played 8-Ball Pool, 338 played Candy Crush and Farm Heroes. 95 played Candy Crush and 8-Hall Pool, 66 played Farm Heroes and 8-Hall Pool, and 20 played all three. How many users play Farm Heroes but do not play Candy Crush? How many users play exactly one of the three games?Explanation / Answer
a)user play farm heroes but dont play candy crush=users play farmheroes -user play both farmheroes & candycrush
=433-338=95
b) user play exactly farmheroes=ushersplayfarmheroes-(users plays farmheroes & candycrush+ users play farmheroes and users play 8-ball pool)
=433-(338+66)=433-404=29
similarly users play exactly candycrush=521-(338+95)=521-433=88
similarly user play exactly 8-ball pool=326-(95+66)=326-161=165
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