Nitin is 7 ranks ahead of Joginder in a class of 39. If Joginder's rank is 17th from the last, what is Nitin's rank from the begi…

Question

Nitin is 7 ranks ahead of Joginder in a class of 39. If Joginder's rank is 17th from the last, what is Nitin's rank from the beginning?

1. A. 17th
2. B. 15th
3. C. 18th
4. D. 16th (Correct answer)

Correct Answer

Option D — 16th

Detailed Solution & Explanation

The correct answer is 16th.

Key Points

• This is a ranking and positions problem.
• Total number of students in the class = 39.
• Joginder's rank is 17th from the last.
• To convert a rank from the last into a rank from the beginning, use the standard formula:
• Rank from beginning = (Total students − Rank from last) + 1
• So Joginder's rank from the beginning = (39 − 17) + 1 = 23rd.
• Nitin is 7 ranks ahead of Joginder.
• Being ahead means a better (smaller) rank number, so we subtract: 23 − 7 = 16.
• Nitin's rank from the beginning is therefore 16th, making option (D) correct.

Exam Tip

• the '+1' in the formula is the single most common mistake in ranking questions.
• Verify quickly with a small example — in a class of 5, the 1st from last is the 5th from the beginning, and (5−1)+1 = 5 confirms the formula works.

प्रश्न (हिन्दी में)

39 विद्यार्थियों की कक्षा में नितिन जोगिन्द्र से 7 रैंक (श्रेणी) आगे है। यदि जोगिन्द्र का रैंक अंतिम से 17 वाँ है तो नितिन का रैंक आरम्भ से कितना है?

1. A. 17 वाँ
2. B. 15 वाँ
3. C. 18 वाँ
4. D. 16 वाँ