Interactive tool
Work out how many of your planned attempts must be correct to hit a target
In short
If you already know how many questions you plan to attempt, enter that number with your target score. The calculator returns the minimum correct answers needed, the wrong answers you can afford within those attempts and the accuracy that implies.
Every attempted question counts as correct or wrong, so wrong answers are whatever is left over from your attempts.
Exam preset
JEE Main Paper 1: 75 questions, +4 correct, −1 incorrect.
Minimum correct answers within your planned attempts
52of 60 attempts
ceil((200 + (1.00 × 60)) ÷ (4 + 1.00)) = 52
Maximum wrong within those attempts
8
Required accuracy
86.67%
Resulting score
200.00
Attempts
60
This is arithmetic on your own plan. It is not a rank, percentile or admission prediction.
Formula used
If the minimum correct exceeds your planned attempts, the target cannot be reached: increase attempted questions or change your target.
Because wrong = A − C for A planned attempts, the score is P × C − N × (A − C), which rearranges to (P + N)C − NA.
Setting that equal to the target T and solving for C gives minimumCorrect = ceil((T + (N × A)) ÷ (P + N)).
1. Choose the exam preset so the marking rule is filled in.
2. Enter your target score.
3. Enter how many questions you plan to attempt.
4. Read the minimum correct answers and the required accuracy.
With P = 4 and N = 1, the minimum correct is ceil((200 + (1 × 60)) ÷ 5) = ceil(260 ÷ 5) = 52. That leaves 8 wrong answers, and 52 × 4 − 8 = 200 exactly.
The required accuracy is 52 ÷ 60 = 86.67% within the attempts you planned.
The required accuracy applies only to the questions you plan to attempt, not to the whole paper. Attempting more questions lowers the accuracy needed but raises the exposure to negative marking, and the arithmetic shows both effects.
How this differs from the Target Score Calculator: there you choose a number of wrong answers, here you fix the total attempts.
It assumes every attempted question receives either full marks or the full penalty, which holds for uniform +P / −N papers such as JEE Main, NEET and NDA, and not for JEE Advanced sections with partial credit.
Built Rank Sarthi pages that go with this calculation.
