question_answer

There are twenty people working in an office. The first group of five works between 8:00 a.m. and 2:00 p.m. The second group of ten works between 10:00 a.m. and 4:00 p.m. And the third group of five works between 12 noon and 6:00 p.m. There are three computers in the office which all the employees frequently use. During which of the following hours the computers are likely to be used most?

A) 10:00 a.m. - 12 noon     

B) 1:00 p.m - 3:00 p.m.

C) 12 noon - 2:00 p.m.       

D) 2:00 p.m. - 4:00 p.m.

Correct Answer: C

Solution :

: We have three time periods 8:00 a.m. ? 2:00 p.m. 10:00 a.m. ? 4:00 p.m. 12 noon?6:00 p.m. From (i), (ii) and (iii), we see only three time digits 12, 1 and 2 are common to all of them. It means the common time period is 12 noon to 2 p.m.