Question :
In the adjoining figure $\angle AOC=140^{\circ}$, where O is the centre of the circle then $\angle ABC$ is equal to:

Option 1: $110^{\circ}$

Option 2: $100^{\circ}$

Option 3: $90^{\circ}$

Option 4: $40^{\circ}$

Question : In the given figure, O is the centre of the circle, $\angle DAB=110^{\circ}$ and $\angle BEC=100^{\circ}$. What is the value (in degrees) of $\angle OCB$?

Option 1: 5

Option 2: 10

Option 3: 15

Option 4: 20

Question : In the following figure, AB is the diameter of a circle whose centre is O. If $\angle AOE=150^{\circ},\angle DAO=51^{\circ}$ then the measure of $\angle CBE$ is:

Option 1: 115°

Option 2: 110°

Option 3: 105°

Option 4: 120°

Question : In the given figure, O is the centre of the circle, $\angle PQR=100^{\circ}$ and $\angle STR=105^{\circ}$. What is the value (in degree) of $\angle OSP$?

Option 1: 95

Option 2: 45

Option 3: 75

Option 4: 65

Question : Direction: The pie chart shows the breakup of the monthly expenditure of a person.

What is the central angle made by the sector of expenditure on education?

Option 1: 93.6$^\circ$

Option 2: 88.2$^\circ$

Option 3: 84.3$^\circ$

Option 4: 95.2$^\circ$