16. 

How many times do the hands of a clock coincide in a day?

A. 20
B. 21
C. 22
D. 24

17. 

At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other?

A.
5 1 "
11
B.
12 4 "
1 1
C.
13 4 "
1 1
D.
16 4 "
1 1

18. 

How many times in a day, the hands of a clock are straight?

A. 22
B. 24
C. 44
D. 48

19. 

A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct?

A. 2 p.m. on Tuesday
B. बुधवार को 2 PM पर पोस्टेड
C. गुरुवार को 3 PM पर पोस्टेड
D. शुक्रवार को 1 PM पर पोस्टेड