question_answer

How many right angles are formed when hour hand of a clock moves from (a) 2 to 8, (b) 6 to 9                       

A)

(a)	(b)
1	1

B)

(a)	(b)
1	2

C)

(a)	(b)
2	2

D)

(a)	(b)
2	1