In a row of boys, A is 15th from the left and B is fourth from the right. There are three boys between A and B, C is first left of A. What is the position of C from the right ?

Question

Accepted Answer

To determine the position of C from the right, let's analyze the given information step by step:

1. **Position of A and B:**
   - A is 15th from the left.
   - B is 4th from the right.
   - There are three boys between A and B.

2. **Calculating the total number of boys:**
   - Since there are three boys between A and B, we can determine the total number of boys in the row.
   - The position of A from the left is 15, and there are three boys between A and B, so B is the 19th from the left (15 + 3 + 1 = 19).
   - B is also given as 4th from the right. Therefore, the total number of boys is 19 + 3 = 22.

3. **Position of C:**
   - C is first to the left of A, which means C is 14th from the left (15 - 1 = 14).

4. **Calculating C's position from the right:**
   - Since the total number of boys is 22, and C is 14th from the left, C's position from the right is calculated as follows:
   - Total number of boys - Position of C from the left + 1 = 22 - 14 + 1 = 9.

Therefore, the position of C from the right is 9th, which corresponds to Option 1.

**Explanation for why other options are incorrect:**

- **Option 2 (10th):** This would imply that C is further to the right than calculated, which contradicts the given positions and the total number of boys.
- **Option 3 (12th):** This would place C even further to the right, which is inconsistent with the calculated position based on the given information.
- **Option 4 (13th):** This would place C almost at the end of the row, which is not possible given the positions of A and B and the total number of boys.

Thus, the correct answer is Option 1, which accurately reflects the position of C from the right based on the provided information.