लड़कियों की एक पंक्ति में, रूपा बाएं से 7वें स्थान पर है जबकि सुनीता दाएं से 12वें स्थान पर है। अपने स्थानों को आपस में बदलने पर, रूपा बाएं से 22वें स्थान पर आ जाती है। पंक्ति में कुल कितनी लड़कियां हैं?

In a row of 50 persons, Gaurav was 25th from the left and Harsh was 15th from the right end of the row. If there were as many people to the left of Isha as the number of people between Gaurav and Harsh, what was Isha's position from the right end of the row?

In a row of children, Bali is seventh from the left and Moti is fourth from the right. When Bali and Moti exchange positions, Bali becomes fifteenth from the left. What will be Moti's position from the right?