1.

A survey was conducted over a group of 900 people asking about their usage of mobile, laptop and tablet. The average number of users that are using only one of them is 107, while 168 users are using all of the three items. If the total number of people using none of them is 5, how many users are using only two of the items?1). 3212). 4063). 5744). 620

Answer»

⇒ Average no. of users using only ONE of them = 107

⇒ Total no. of users using either mobile or laptop or tablet = 3 × 107 = 321

Now,

⇒ No. of users using all three of them = 168

⇒ No. of people using none of them = 5

⇒ Total no. of people in survey = 900

∴ No. of people using only two of them = 900 – 321 – 168 – 5 = 900 – 494 = 406


Discussion

No Comment Found

Related InterviewSolutions