Round 1: reasoning (where checking beats knowing)
These need no education at all - only the discipline to distrust your first answer. That is a skill, and it is unevenly distributed regardless of qualification.
A bat and a ball cost ₹110 together. The bat costs ₹100 more than the ball. What does the ball cost?
₹5. If the ball were ₹10, the bat would be ₹110 and the total ₹120. Setting the ball as x gives x + (x + 100) = 110, so x = 5. Most people answer ₹10 within two seconds and never check.
If it takes 5 machines 5 minutes to make 5 widgets, how long do 100 machines take to make 100 widgets?
5 minutes. Each machine takes 5 minutes per widget, so 100 machines working in parallel produce 100 widgets in the same 5 minutes. The intuitive answer of 100 minutes comes from scaling the wrong quantity.
A lily patch doubles in size every day and covers the whole lake on day 48. On which day was it half covered?
Day 47. Doubling means the step before full is exactly half. Exponential growth defeats intuition consistently, which is why this question works on almost everyone.
All roses are flowers. Some flowers fade quickly. Does it follow that some roses fade quickly?
No. The quick-fading flowers could all be non-roses. The conclusion is possible but not necessary, and 'possibly true' is not 'follows' - the distinction most people get wrong on first reading.
A man says: 'This statement is false.' Is he telling the truth?
Neither answer works - it is the liar paradox. If true, then it is false; if false, then it is true. Recognising that a question has no consistent answer is itself the correct response, and questions like this are how you tell reasoning from pattern-matching.
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Related reading
Round 2: mathematics (school level, adult failure rate)
What is 15% of 240?
36. Take 10% (24) and add half of it (12). Percentage arithmetic done by chunks is faster and more reliable than reaching for long multiplication.
A shirt costs ₹800 after a 20% discount. What was the original price?
₹1,000. The sale price is 80% of the original, so divide rather than adding 20% back. Adding 20% to ₹800 gives ₹960 - the most common wrong answer in all of percentage arithmetic.
Which is larger: 8.11 or 8.9?
8.9, because it equals 8.90. The extra digit in 8.11 makes it look bigger, and this catches a startling number of adults.
If a train travels 180 km in 2.5 hours, what is its average speed?
72 km/h. Distance divided by time - 180 ÷ 2.5. Converting 2.5 hours to 150 minutes and then dividing is where mistakes creep in.
What is the probability of getting at least one head in two coin tosses?
3/4. The outcomes are HH, HT, TH, TT and three qualify. Equivalently, 1 minus the probability of no heads. 'At least one' questions are almost always faster via the complement.
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Round 3: science (the questions graduates miss)
Why is it hotter in summer - because the Earth is closer to the Sun?
No. Seasons are caused by the tilt of the Earth's axis, which changes the angle and duration of sunlight in each hemisphere. The Earth is in fact slightly closer to the Sun during the northern hemisphere's winter. This is among the most persistent science misconceptions among educated adults.
Which planet is the hottest, and why is it not the closest one?
Venus, because its dense carbon dioxide atmosphere traps heat in a runaway greenhouse effect. Mercury is closer but has almost no atmosphere to retain heat, so its dark side is extremely cold.
Do astronauts float on a space station because there is no gravity?
No - they are in continuous free fall around the Earth, which is called microgravity. Gravity is very much present at that altitude; the station and everything in it are simply falling together.
Which blood group can donate red cells to anyone?
O negative, the universal red-cell donor. AB positive is the universal recipient. The logic rests on which antigens are present on the red cells.
Why can you not hear an explosion in space?
Because sound is a mechanical wave requiring a medium, and space is close to a vacuum. Light is electromagnetic and needs no medium, which is why space is visible but silent.
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Round 4: language and general knowledge
Which is correct: 'Neither of the boys was present' or 'were present'?
'was'. Neither, either, each and every take singular verbs regardless of the plural noun that follows them.
What is the difference between 'affect' and 'effect'?
Affect is usually the verb, meaning to influence; effect is usually the noun, meaning the result. 'The policy affected sales' and 'the effect on sales was large'.
What does 'ubiquitous' mean, and what does 'ephemeral' mean?
Ubiquitous means present everywhere; ephemeral means short-lived. Both appear constantly in vocabulary sections and in ordinary writing.
What is the capital of Australia?
Canberra, not Sydney. It was purpose-built as a compromise between Sydney and Melbourne - which is exactly why so many people get it wrong.
Which country has three capital cities, and what does each do?
South Africa: Pretoria is the executive capital, Cape Town the legislative, and Bloemfontein the judicial.
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What your score pattern actually means
The total is the least interesting number here. What matters is which rounds you lost, because they point at different things and only one of them is fixed by reading more.
| Pattern | What it suggests | What to do about it |
|---|---|---|
| Strong reasoning, weak GK | Good thinking, narrow exposure | Read widely; GK responds fast to daily quizzing |
| Strong GK, weak reasoning | Broad recall, unchecked intuition | Practise checking your first answer before committing |
| Weak maths, strong elsewhere | Rust rather than inability | Ten timed arithmetic questions a day rebuilds it quickly |
| Strong in your own field only | Normal effect of specialisation | Nothing to fix - but do not mistake depth for breadth |
- ✓Higher education narrows deliberately. A specialist losing a general knowledge round is a feature of specialisation, not a failure of intelligence.
- ✓Reasoning questions punish speed and reward verification. If you missed round 1 but not round 4, your problem is impulse rather than knowledge.
- ✓Science misconceptions among educated adults are remarkably durable - seasons, gravity in orbit, and Venus being hotter than Mercury persist through years of schooling because they are rarely directly challenged.
- ✓The one thing this quiz genuinely cannot measure is intelligence. It measures what you happen to know and whether you check your work, which are both trainable.
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