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Percentages
Question: a ₹800 item is discounted by 15%. Answer: the discount is 800 × 0.15 = ₹120, leaving ₹680. Check whether a question asks for the discount or the final price.
Ratios
Question: divide ₹750 in the ratio 2:3. Answer: five total parts mean ₹150 per part; the two shares are ₹300 and ₹450. Their sum must equal ₹750.
Averages
Question: four scores are 12, 16, 18 and 14. Answer: the sum is 60; dividing by four gives an average of 15. Use the number of observations, not the number of gaps between them.
Basic algebra
Question: solve 3x + 5 = 26. Answer: subtract five to obtain 3x = 21, then divide by three, so x = 7. Substituting gives 21 + 5 = 26.
Use these exercises correctly
The historical BBA/BCA guidance names preliminary mathematics. These original examples are illustrative revision material, not an official sample paper or a claim about difficulty, weightage or question frequency.
Official sources and verification
Sources checked on 26 October 2026. A source’s date, programme and campus limit which claims it supports. Official pages may change after review.
- UEM Kolkata — IEMCET 2026 syllabus and instructions
Historical course-specific preparation guidance. Some introductory route text conflicts with the central portal.
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