The 4 kinds of wrong answers in SSC CGL—and what to do about each

This is the cleanest kind of error. You did not recognise the rule, formula, definition, or method. It is not fixed by immediately solving fifty more questions; that usually makes you memorise answer patterns without understanding them.

Repair it by learning the smallest missing idea, making a short example in your own words, and solving five untimed questions. Only then use a timed set.

These errors often look like ‘careless mistakes’ but they usually have a repeatable trigger: using a percentage change on the wrong base, mixing up simple and compound interest, reversing a condition, or choosing the conclusion before checking all statements.

Repair it by writing the exact incorrect step beside the correct one. Then solve contrast questions: two questions that look similar but require different setups. Your brain learns the decision point, not just the final formula.

Taking too long is not proof that you are weak. It may mean your method works but is not exam-efficient yet. First check whether the question belongs in your first pass at all. Some questions should be skipped and returned to later.

Repair it with a time cap. Practise three questions using the same method, record the first step you take, and compare it with a shorter method only after attempting it yourself. Speed comes from recognising structure, not from rushing arithmetic.

A real silly mistake is rare and specific: reading ‘not’ as ‘now’, carrying 18 instead of 81, or clicking B after deriving C. If the same ‘silly’ mistake repeats, it is a process problem, not bad luck.

Repair it with a final ten-second check: underline units and negatives, estimate the range of a numerical answer, and point to the chosen option before submitting. Track the trigger—not just the number of careless errors.