Aradhya wrong till 13 Oct 2026
| S.No | Date | Subject | Question | Options |
|---|---|---|---|---|
| Maths — Surds & Arithmetic Progressions | ||||
| 1 | Maths | Surds | If x = (√3 − 1)/(√3 + 1), then the value of x³ + 1/x³ is: | A) 64 B) 52 C) 40 D) 76 |
| 2 | Maths | AP | A sales executive starts with an annual target of selling 1,200 units of a product in their first year. The company increases their annual target by 150 units every year. In which specific year will their annual target reach 3,000 units? | Answer: 13th year (a = 1200, d = 150; 1200 + (n−1)·150 = 3000 → n = 13) |
| 3 | Maths | AP | A person decides to save money every month. In the first month, they save Rs 3,000. Each subsequent month, they increase their savings by Rs 400 compared to the previous month. Find the total amount saved by the person at the end of 2 years (24 months). | Answer: Rs 1,82,400 (S₂₄ = 12/2 × [2(3000) + 23(400)] = 12 × 15,200 = 1,82,400) |
| 4 | Maths | AP | The starting salary of an engineer is Rs 5,50,000 in the first year. She receives a fixed annual increment of Rs 20,000 each year for the next 14 years. Find the total amount she earns over the entire 15-year period. | Answer: Rs 1,03,50,000 (S₁₅ = 15/2 × [2(5,50,000) + 14(20,000)] = 7.5 × 13,80,000 = 1,03,50,000) |
| 5 | Maths | Surds | ∛√(26 − 15√3) = | A) 2 + √3 B) 2 − √3 C) √2 − √3 D) √3 − 2 |
| 6 | Maths | Exponents | If 5a = 7 and 7b = 25, then the value of ab is equal to _______. | Answer: 2 (ab = log57 × log725 = log57 × 2/log57 = 2) |
| Biology — Morphology of Flowering Plants | ||||
| 7 | Maths | Biology | In the inflorescence of Solanum: | a) The main axis terminates into a flower b) Peduncle continuous to grow c) Younger flowers are present towards the apex d) Flowers are born in basipetal succession |
| ANSWERS | ||||
| 1-B 2) 13th year 3) Rs 1,82,400 4) Rs 1,03,50,000 5-B 6) 2 7) a, d | ||||
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