Defence | BSF Water Wing (Group B & C)
BSF Water Wing (Group B & C) sets 30 Mathematics questions for 30 marks in the Written Examination (HC / Constable paper), so it is worth planning your preparation around the topics below.
The quantitative core of the railway papers: arithmetic, mensuration, and time-speed-distance built on a secondary-school foundation. Fluency with fractions, percentages and ratios underlies almost every question, so that is where practice pays back fastest.
How much Mathematics is worth in each BSF Water Wing (Group B & C) stage, from the official pattern.
| Stage | Questions | Marks | Time | Share |
|---|---|---|---|---|
| Written Examination (HC / Constable paper) | 30 | 30 | — | 30% |
Every topic in the official syllabus. The linked ones open a set of solved questions you can practise straight away.
Written to the BSF Water Wing (Group B & C) pattern, with the answer key and the method behind it — a look at how the section is actually set before you drill the full topic sets.
Percentage · solved example
A patrol boat consumes 40 litres of fuel. If 15% is reserve and cannot be used, how many litres are available for the patrol?
Solution
Reserve = 15% of 40 = 6 litres. Available = 40 − 6 = 34 litres.
Time and distance · solved example
A boat travels downstream at 18 km/h and upstream at 12 km/h. What is the speed of the boat in still water?
Solution
Speed in still water = (downstream + upstream) / 2 = (18 + 12) / 2 = 15 km/h.
Ratio · solved example
Divide Rs 450 among A and B in the ratio 2 : 3. How much does B receive?
Solution
B's share = 3/(2+3) × 450 = 3/5 × 450 = 270 rupees.
Simple interest · solved example
Find the simple interest on Rs 2,000 at 6% per annum for 2 years.
Solution
SI = P × R × T / 100 = 2000 × 6 × 2 / 100 = 240 rupees.
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Mathematics shows up in every BSF Water Wing (Group B & C) mock test, in the same interface, with sectional locking and negative marking.
BSF Water Wing: 16-question practice mock
16 questions | 20 min
BSF Water Wing (Group B & C) 2024 cycle sets 30 Mathematics questions for 30 marks in the Written Examination (HC / Constable paper).
No. The BSF Water Wing (Group B & C) written stage carries no negative marking, so it is worth attempting every Mathematics question you can.
The BSF Water Wing (Group B & C) syllabus lists Number system and basic arithmetic, Percentage, ratio, proportion and averages, Profit and loss, simple and compound interest, Time and work, time, speed and distance, Simple mensuration and basic geometry. Weight your revision towards the ones you are weakest on and confirm the emphasis against the paper analysis for recent cycles.
Every Mathematics question on this site is free and written to the exam pattern. Use the topic drills for instant-feedback practice, the daily quiz to keep the section warm, and the BSF Water Wing (Group B & C) mock tests to sit it under a real clock with negative marking.