Advanced Practice – Page 5 (Exam Mock Level)

Very High Difficulty • Mixed Concepts • Target Time: 20 Minutes

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 Questions

Q1. 7, 20, 46, 85, 137, ?

Q2. A and B together complete work in 4 days. A alone takes 12 days. B alone?

Q3. 2, 6, 24, 120, ?, 5040

Q4. A sum becomes ₹2197 in 3 years at 10% CI. Find principal.

Q5. A train crosses a pole in 16 sec and a platform in 28 sec. Ratio of lengths?

Q6. Ratio A:B:C = 2:3:4, total = 1800. Find B.

Q7. 10, 30, 68, 130, 222, ?

Q8. Selling price is 40% more than cost price. Profit %?

Q9. 3, 15, 45, 105, 195, ?

Q10. A completes work in 6 days, B in 8 days. Together?

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✔️ Answers & Explanation

Q1. Differences: +13, +26, +39, +52 → Next +65 → 137+65 = 202

Q2. (1/A + 1/B = 1/4), A=12 → (1/12 + 1/B = 1/4)
→ 1/B = 1/4 − 1/12 = 2/12 = 1/6 → 6 days

Q3. Pattern: factorial → 2!, 3!, 4!, 5! → Next = 6! = 720

Q4. P(1.1)³ = 2197 → P = 2197 / 1.331 = 1650

Q5. Ratio = 16 : (28−16) = 16:12 = 4:3

Q6. Total parts = 9 → B = (3/9)×1800 = 600

Q7. Differences: +20, +38, +62, +92 → Pattern +18, +24, +30 → Next +128 → 222+128 = 350

Q8. SP = 140% of CP → Profit = 40%

Q9. Differences: +12, +30, +60, +90 → Pattern increasing by 18, 30 → Next +120 → 195+120 = 315

Q10. (1/6 + 1/8) = 7/24 → Time = 24/7 = 3.43 days