There are twenty people working in an office. The first group of five works between8.00 a.m. and 2.00 p.m. The second group of ten works between 10.00 a.m. and 4.00p.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 used. During which of the following hours the computers are likely to be used most?

There are twenty people working in an office.

The first group of five works between8.00 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 used.

8:00 a.m. – 2:00 p.m.: First group of 5 people
10:00 a.m. – 4:00 p.m.: Second group of 10 people
12:00 noon – 6:00 p.m.: Third group of 5 people

From 10.00 a.m. to 12.00 noon:
First group (5 people) and second group (10 people) are working.

Total employees: 5 + 10 = 15.

From 12.00 noon to 2.00 p.m.:
First group (5 people), second group (10 people), and third group (5 people) are working.

Total employees: 5 + 10 + 5 = 20.

From 2.00 p.m. to 4.00 p.m.:
Second group (10 people) and third group (5 people) are working.

Total employees: 10 + 5 = 15.

So, the computers are likely to be used the most during 12.00 noon – 2.00 p.m

Thus, the correct answer is (c).