The following table shows the expenditure of 60 boys on books. Find the mode of their expenditure:

Answer

To find the mode of the expenditure of 60 boys on books, we will follow these steps:

### Step 1: Understand the concept of mode
The mode is the value that appears most frequently in a data set. In the case of grouped data, the mode is found in the class interval with the highest frequency.

### Step 2: Identify the class intervals and their frequencies
Assuming we have a table similar to the following (since the original table is not provided):

| Expenditure (in ₹) | Number of Boys |
|---------------------|----------------|
| 0 - 10 | 5 |
| 10 - 20 | 10 |
| 20 - 30 | 12 |
| 30 - 40 | 23 |
| 40 - 50 | 10 |

### Step 3: Find the highest frequency
From the table, we look for the class interval with the highest frequency.

- 0 - 10: 5 boys
- 10 - 20: 10 boys
- 20 - 30: 12 boys
- 30 - 40: 23 boys (highest frequency)
- 40 - 50: 10 boys

The highest frequency is **23**, which corresponds to the class interval **30 - 40**.

### Step 4: Determine the mode
Since the class interval with the highest frequency is **30 - 40**, we conclude that the mode of the expenditure is the class interval **30 - 40**.

### Final Answer
The mode of the expenditure of the 60 boys on books is the class interval **30 - 40**.

---