Quantitative Aptitude – Verified PYQ Authority Guide
Quantitative Aptitude is organised as a topic-level PYQ authority page. It brings together the strongest verified question clusters, exam/year coverage and concept-level practice so students can revise the topic without jumping through unrelated notes. Every factual learning cue below is drawn from the existing verified, published and approved English PYQ corpus or from its Knowledge Graph relationships; the hub does not invent unsupported technical claims.
PYQ evidence snapshot
72 verified PYQs are currently mapped to this Topic hub. The represented years include 2025. Exam coverage currently includes RRB NTPC Under Graduate Level. Subject context includes Quantitative Aptitude. These values come from live mappings and can expand automatically when new verified PYQs are added.
Most useful verified PYQs to solve first
Start with the actual questions rather than memorising a generic note. The links below are ranked from the mapped corpus using repeat history and editorial quality, while the complete explanation stays on the individual question page.
- The monthly charges of a hostel consist of a fixed part and a variable part depending on the number of students. For 25 students, the total bill is ₹17,500. For 40 students,…
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches ₹35,000. - If a and b are two coprime numbers such that a + b = 41, then what is the maximum possible value of a × b?
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches 420. - Saumya has ₹ 24,800 in denominations of ₹500 and ₹100 notes. The number of ₹500 notes is 4 more than the number of ₹100 notes. Find the number of ₹100 notes.
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches 38. - The sum of two digits of a 2-digit number is 9. If the number obtained by interchanging the digits exceeds the original number by 27, find the number.
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches 36. - X can finish a job in 20 days. Y can complete the same job in 15 days. If X and Y work together for 5 days and X leaves, how long will…
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches 6.25 days. - 324 × 24 = 7776. What will 7.776 ÷ 2.4 be equal to?
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches 3.24. - To prepare a fruit punch, 2 litres of orange juice are mixed with 5 litres of water. How much water is required if 5 litres of orange juice are used?
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches 12.5 litres. - A family increases its monthly income by 10% but their monthly expenditure rises by 20%. If their original monthly income was ₹45,000 and monthly expenditure was ₹36,000, what is the new monthly…
RRB NTPC Under Graduate Level · 2025 · Arithmetic Problem Solving
Use the standard Arithmetic Problem Solving method and simplify; the result matches ₹6,300.
Formula & key-relationship bank from verified solutions
Work/Filling rate = 1 ÷ time; net rate = filling rates − emptying rates
Use these as revision triggers and open the linked PYQ before applying a formula numerically; variable definitions and assumptions belong to the exact solved question.
Core ideas repeatedly reinforced by the solved corpus
- Use the standard Arithmetic Problem Solving method and simplify; the result matches ₹35,000.
- Use the standard Arithmetic Problem Solving method and simplify; the result matches 420.
- Use the standard Arithmetic Problem Solving method and simplify; the result matches 38.
- Use the standard Arithmetic Problem Solving method and simplify; the result matches 36.
- Use the standard Arithmetic Problem Solving method and simplify; the result matches 6.25 days.
Exam tips already validated in SRO solutions
- Identify the Arithmetic Problem Solving relationship before calculation and keep units/bases consistent.
Common mistakes to avoid
- Using a shortcut without checking its conditions or using the wrong base/unit.
Topic and concept coverage
Mapped topic labels include Quantitative Aptitude. The concept trail includes Arithmetic Problem Solving. Use these labels as a revision map: move from the broad area to the narrow concept, solve a verified PYQ, inspect the detailed reasoning, and then attempt another question from the same cluster.
Knowledge Graph navigation
Continue with Arithmetic, General Arithmetic, Quantitative Aptitude, Arithmetic Problem Solving, Arithmetic Problem Solving, Arithmetic Problem Solving. These are canonical SRO entity links based on the Knowledge Graph and shared question mappings, not keyword-stuffed tag pages.
How to revise this authority page efficiently
- Solve before reading: answer a mapped PYQ first.
- Read the exact explanation: verify the correct principle, formula, distractor logic and common mistake on that question page.
- Move one level in the graph: use the closest concept/sub-topic/topic link rather than opening unrelated content.
- Reattempt: solve another verified PYQ from this hub and check whether the same error repeats.
Quality scope: this page is automatically maintained from SRO’s verified mapped corpus. It enriches one canonical authority URL instead of generating multiple near-duplicate pages for keyword variants. Manual authority articles are never overwritten by the automated engine.