Match the following.
`{:(,"List-I",,"List-II"),((P),"Five sixth of a straight angle =",1.,72^(@)),((Q),(4)/(5) "of a right angle =",2.,270^(@)),((R),"Three right angles =",3.,150^(@)),((S),"One right angle =",4.,90^(@)):}`

Options

A. P - 3, Q - 1, R - 2, S - 4
B. P - 2, Q - 1, R - 3, S - 4
C. P - 4, Q - 3, R - 2, S - 1
D. P - 1, Q - 2, R - 3, S - 4

Answer

To solve the question of matching the angles from List-I with their corresponding values in List-II, we will go through each item step by step.

### Step-by-Step Solution:

1. **Understanding the Angles**:
- A **straight angle** measures **180 degrees**.
- A **right angle** measures **90 degrees**.

2. **Calculating Five Sixth of a Straight Angle (P)**:
- We need to calculate \( \frac{5}{6} \) of a straight angle.
- This can be calculated as:
\[ \frac{5}{6} \times 180 = \frac{900}{6} = 150 \text{ degrees} \]
- Therefore, \( P \) matches with **150 degrees** (which is option 3).

3. **Calculating Four Fifths of a Right Angle (Q)**:
- We need to calculate \( \frac{4}{5} \) of a right angle.
- This can be calculated as:
\[ \frac{4}{5} \times 90 = \frac{360}{5} = 72 \text{ degrees} \]
- Therefore, \( Q \) matches with **72 degrees** (which is option 1).

4. **Calculating Three Right Angles (R)**:
- We need to calculate \( 3 \) times a right angle.
- This can be calculated as:
\[ 3 \times 90 = 270 \text{ degrees} \]
- Therefore, \( R \) matches with **270 degrees** (which is option 2).

5. **Calculating One Right Angle (S)**:
- A right angle is simply **90 degrees**.
- Therefore, \( S \) matches with **90 degrees** (which is option 4).

### Final Matches:
- \( P \) matches with **3** (150 degrees).
- \( Q \) matches with **1** (72 degrees).
- \( R \) matches with **2** (270 degrees).
- \( S \) matches with **4** (90 degrees).

### Summary of Matches:
- P → 3
- Q → 1
- R → 2
- S → 4