Question

Twenty girls are sitting in a row. A girl is shifted by four places towards the left, then she became 8th from the left end. The earlier position of that girl from the right end of the row is

• A. 9th
• B. 10th
• C. 11th
• D. 12th

Hint:

Position from right = Total − Position from left + 1.

Answer 1

The Correct Option is A

To solve the problem, let's analyze the information given step-by-step:

1. Initially, a certain girl is shifted by four places towards the left. After this shift, she becomes the 8th girl from the left end.
2. Let's assume her original position from the left end was \(x\). After moving four places to the left, her position becomes 8th from the left.
3. Therefore, we can write the equation:

\(x - 4 = 8\)

1. Solve for \(x\):

\(x = 8 + 4 = 12\)

1. Hence, her original position from the left end was the 12th position.
2. The total number of girls in the row is 20. The position from the right end can be found using the formula:

\(\text{Position from the right} = \text{Total number of girls} - \text{Position from the left} + 1\)

1. Plugging in the values:

\(\text{Position from the right} = 20 - 12 + 1 = 9\)

Thus, the original position of the girl from the right end was the 9th position.

Therefore, the correct answer is:

• 9th