Question 1

What formula drives the attempt recommendation?

Accepted Answer

Expected Gain Per Attempt = (accuracy × marks) − ((1 − accuracy) × penalty per wrong). This is your net expected marks for each question you attempt. Recommended Attempts = ⌈Target Score / Expected Gain⌉, capped at total questions. If your expected gain per attempt is zero or negative, the recommendation is zero — attempting any question hurts your expected score.

Question 2

What is break-even accuracy?

Accepted Answer

Break-even accuracy is the minimum success rate at which attempting a question has a positive expected return. Below it, each attempt is statistically expected to reduce your score. Formula: Break-Even Accuracy = Penalty Per Wrong / (Marks Per Question + Penalty Per Wrong). For a 2-mark question with ⅓ penalty (0.667 per wrong): break-even = 0.667 / (2 + 0.667) = 25%. Above 25% accuracy, attempting helps on average.

Question 3

How do I estimate my accuracy?

Accepted Answer

Accuracy is your hit rate — the fraction of questions you attempt that you get right. From mock tests: count your correct answers as a percentage of all questions you marked (not total questions). If you attempted 60 questions and got 42 right, your accuracy is 42/60 = 70%.

Question 4

Will I score exactly the expected score if I follow the recommendation?

Accepted Answer

No — expected score is a statistical average. With 70% accuracy, you'll get roughly 70% right among the ones you attempt, but any individual attempt might go either way. The more questions you attempt, the closer your actual score converges to the expected value. With only a handful of attempts, individual variance is high.

Question 5

What does 'minimum accuracy to hit target attempting all questions' mean?

Accepted Answer

This is the accuracy you'd need to reach the target score even if you attempted every single question. If that number is above 100%, the target is mathematically impossible to hit by attempting all questions — you'd need to reconsider the target or accept leaving questions unattempted.

Question 6

When does the calculator recommend zero attempts?

Accepted Answer

When your accuracy is below the break-even point or your target score is zero or negative. Below break-even, every attempt is expected to cost you marks on average, so the optimal strategy is to not attempt anything. This is rare in practice — most exams have lenient enough penalties that even modest accuracy is positive-expectation.

Question 7

What is a typical UPSC Prelims attempt strategy?

Accepted Answer

UPSC CSE Prelims (GS Paper I): 100 questions, 2 marks each, ⅓ penalty (0.667 per wrong). Break-even accuracy = 25%. Most well-prepared candidates with 65–75% accuracy should aim for 70–85 attempts based on their expected gain per attempt. At 65% accuracy: gain = 0.65×2 − 0.35×0.667 = 1.0667 per attempt; to reach 110 marks → ⌈110 ÷ 1.0667⌉ = ⌈103.1⌉ = 104 attempts. These are estimates only — individual results vary.

Attempt Strategy Calculator

The expected gain formula

The break-even threshold

Example — 70% Accuracy, Target 100, ⅓ Penalty

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