Common Careless Mistakes

Question

What are the most common mistakes you have made in tests? A good list will help aspirants reduce their mistakes in GATE. Just listing out some common ones.

1. Missing the “NOT” in question – our eyes have a tendency to focus on important words and miss the “NOT”
2. Question might be asking “FALSE” statement – again our mind tend to focus more on positive ones and hence ignore “FALSE” in the sentence
3. $A \implies B$ does not mean $B \implies A$ or $\neg A \implies \neg B.$ (It does mean $\neg A \vee B \equiv \neg B \implies \neg A).$ Usually this mistake is committed in interpreting many statements
4. Closure property misuse – A set $A $ not closed under operator $*$ means for $a,b \in A, a*b $ MAY or MAY NOT be in $A.$ Many people think it is always NOT in $A$
5. Missing “0” – when you do large calculations ensure that the final answer is copied exactly without missing any digits – this can happen for Numerical questions
6. “Unit” – Being aware of the units in the question can ensure you avoid many calculation mistakes. In any formula you do, you must get the correct unit for the result

Please add more as answers. 

Comments

Take care of BINARY & BOOLEAN in Digital circuit & design logic problems.

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take care of semi colons in while loops while solving synchronization problems

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1. True / False / Correct / Incorrect / Not True / Not False / Not Correct / Not incorrect
2. Possibly true / must be true / necessarily true
3. Can be, Always, for All, for Any, for Every, ONLY
4. Units- bits / bytes / milli / micro / nano
5. Value / Ratio / Percentage
6. Binary AND / Bitwise AND
7. Don’t do big calculations in your head, either write it down and solve clearly, or use calculator
8. Keep track of time
9. Don’t get attached to the question
10. Focus when to take Ceil value or Floor value

Answer 1

My common mistakes :- 

1. “Exactly 1” means not more than 1 and “””””not less than 1”””” .
2. forming kmap for POS always make it for SOP
3.