The angle between the hour and minute hands of a clock can be found using the formula:
Angle =∣30H−5.5M∣
where H is the hour and M is the minutes.
If the angle is greater than 180°, use 360°−angle.
For (A) 2:20 p.m.:
H=2, M=20
Angle =∣30(2)−5.5(20)∣
=∣60−110∣
=∣−50∣
=50°
Therefore, (A) matches with (III)
For (B) 3:10 p.m.:
H=3, M=10
Angle =∣30(3)−5.5(10)∣
=∣90−55∣
=35°
Therefore, (B) matches with (I)
For (C) 4:30 p.m.:
H=4, M=30
Angle =∣30(4)−5.5(30)∣
=∣120−165∣
=∣−45∣
=45°
Therefore, (C) matches with (IV)
For (D) 5:40 p.m.:
H=5, M=40
Angle =∣30(5)−5.5(40)∣
=∣150−220∣
=∣−70∣
=70°
Therefore, (D) matches with (II)
The correct matching is:
(A) - (III), (B) - (I), (C) - (IV), (D) - (II)
Therefore, the correct answer is Option 4.