Megha is 5th from the left end, so her position from the left is 5.
Priya is 10th from the right end. If there are n total girls in the row, Priya's position from the left is:
n−10+1=n−9
There are 9 girls between Megha and Priya.
The number of girls between two positions is calculated as:
Number of girls between = (Later position) - (Earlier position) - 1
(n−9)−5−1=9
n−15=9
n=24
To verify:
- Megha at position 5 from left
- Priya at position 24−9=15 from left
- Girls between them: 15−5−1=9 ✓
Therefore, there are 24 girls in the row.
The correct answer is Option 3.