उत्तर की ओर उन्मुख खिलाड़ियों की एक पंक्ति में, आर्यन बाएं छोर से 15वें स्थान पर है और वरुण बाएं छोर से 16वें स्थान पर है। आर्यन और वरुण के बीच कितने खिलाड़ी हैं?

Among five friends Pinky, Pooja, Prachi, Neha, and Payal: Pinky is older than only Pooja. Prachi is older than both Pooja and Pinky. Also, Prachi is younger than Neha, who is not the oldest. Who is the oldest?

Suraj ranked 17th from the bottom and 13th from the top in his class. How many students are there in his class?