During the motion of hour hand and minute hand from 1:00 pm to 10:00 pm, the number of right angles formed is this period is:...? Mcqs

During the motion of hour hand and minute hand from 1:00 pm to 10:00 pm, the number of right angles formed is this period is:...?

(A) 9

(B) 10

(C) 18

(D) 20