Entrance Exams
Govt. Exams
5, 10, 20, 40, 80, 160, 320, ?
Each number is multiplied by 2. The sequence is 5×2^n. The next number should be 320×2 = 640. This is a geometric progression with ratio 2.
Cost per apple = 50/12 = Rs. 4.17. Selling price = Rs. 5. Profit = 5-4.17 = 0.83. Profit% = (0.83/4.17)×100 ≈ 20%.
Fibonacci sequence: 1, 1, 2, 3, 5, 8, 13. The 7th number is 13.
For independent events: P(A and B) = P(A) × P(B) = 0.4 × 0.3 = 0.12
log₂(8) means 2^? = 8. Since 2³ = 8, the answer is 3
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