How many times does the angle between the minute and hour hands change from acute to obtuse between 6:00 p.m. and 10:00 p.m. today?
A.
3
B.
4
C.
5
D.
8
Exam No：2020 First Round Grade 5 Year：2020 Question No：31
Answer:
A
Knowledge points:
G5 - Measurement - Clock Angles
Solution:
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