Negative Marking Calculator

JKSSB standard scheme (−¼): You need to be correct at least 20% of the time on attempted questions for negative marking to not hurt you — a random guess among 4 options (a 25% chance) already clears that bar. If your real confidence on a question is below 20%, skip it.

Break-even formula: For a −¼ scheme, you break even when 1 correct offsets 4 wrong (1 mark gained = 4 × ¼ lost) — that's 1 correct out of every 5 attempts, a 1-in-5 (20%) success rate. So if you have better than a 1-in-5 chance of guessing correctly, attempting is worth it. Worse → skip. (Solving p − (1 − p) × ¼ = 0 for p gives exactly 20% — not 1-in-4, which is where this guide used to go wrong.)

Use the what-if tool above to model your specific scenario before the exam. Set accuracy to your estimated confidence level and see whether attempting more questions helps or hurts.