Advanced Practice – Page 4 (Multi-Concept + Trap Level)

Very High Difficulty • Multi-Step Logic • Target Time: 20 Minutes

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 Questions

Q1. 6, 17, 38, 69, 110, ?

Q2. A and B together complete work in 5 days. B alone takes 15 days. A alone?

Q3. 3, 12, 60, 360, ?, 15120

Q4. A sum becomes ₹1728 in 3 years at 20% CI. Find principal.

Q5. A train crosses a pole in 18 sec and a platform in 30 sec. Ratio of lengths?

Q6. Ratio A:B:C = 3:4:5, total = 1440. Find A.

Q7. 9, 27, 54, 90, 135, ?

Q8. Selling price is 25% more than cost price. Profit %?

Q9. 2, 10, 30, 68, 130, ?

Q10. A completes work in 9 days, B in 18 days. Together?

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✔️ Answers & Explanation

Q1. Differences: +11, +21, +31, +41 → Next +51 → 110+51 = 161

Q2. (1/A + 1/15 = 1/5) → 1/A = 1/5 − 1/15 = 2/15 → A = 7.5 days

Q3. Pattern: ×4, ×5, ×6, ×7 → Next ×8 → 360×7=2520 → next = 2520

Q4. P(1.2)³ = 1728 → P = 1728 / 1.728 = 1000

Q5. Ratio = 18 : (30−18) = 18:12 = 3:2

Q6. Total parts = 12 → A = (3/12)×1440 = 360

Q7. Differences: +18, +27, +36, +45 → Next +54 → 135+54 = 189

Q8. SP = 125% of CP → Profit = 25%

Q9. Pattern: n³ + n² → Next = 6³ + 6² = 216+36 = 252

Q10. (1/9 + 1/18) = 3/18 = 1/6 → 6 days