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1 If all A are B, and some B are C, which of the following must be true?
- All A are C
- Some A are C
- No A are C
- All C are A
Correct!Wrong!Explanation
All A are B, but only some B are C. So A might be in the part of B that is not C, so no definite relation between A and C. Thus, 'Some A are C' is not necessarily true. -
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2 A bat and a ball cost $1.10 in total. The bat costs $1.00 more than the ball. How much does the ball cost?
- $0.10
- $0.15
- $0.05
- $0.20
Correct!Wrong!Explanation
Let ball = x, bat = x+1.00. Then x + (x+1.00) = 1.10 => 2x = 0.10 => x = 0.05. So ball costs $0.05. -
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3 If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?
- 100 minutes
- 5 minutes
- 20 minutes
- 1 minute
Correct!Wrong!Explanation
Each machine makes 1 widget in 5 minutes. So 100 machines make 100 widgets in 5 minutes. -
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4 In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take to cover half the lake?
- 47 days
- 24 days
- 36 days
- 12 days
Correct!Wrong!Explanation
Since it doubles each day, half the lake is covered the day before full coverage. So 47 days. -
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5 If you have me, you want to share me. If you share me, you haven't got me. What am I?
- Money
- Love
- Knowledge
- A secret
Correct!Wrong!Explanation
A secret: if you have it, you might want to tell (share) it, but once shared, it's no longer a secret you alone have. -
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6 A farmer has 17 sheep. All but 9 die. How many sheep does the farmer have left?
- 8
- 17
- 9
- 0
Correct!Wrong!Explanation
'All but 9 die' means 9 survive. So the farmer has 9 sheep left. -
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7 Which number should come next in this sequence: 2, 4, 8, 16, ?
- 24
- 32
- 30
- 64
Correct!Wrong!Explanation
Each number doubles the previous: 2*2=4, 4*2=8, 8*2=16, so next is 16*2=32. -
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8 If you rearrange the letters 'CIFAIPC' you get the name of a(n):
- Ocean
- City
- Animal
- Country
Correct!Wrong!Explanation
The letters rearrange to 'PACIFIC' which is an ocean. -
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9 A plane crashes on the border of the U.S. and Canada. Where do they bury the survivors?
- In the U.S.
- In Canada
- On the border
- Nowhere, survivors aren't buried
Correct!Wrong!Explanation
Survivors are alive, so they are not buried. The trick is in the wording. -
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10 What comes next in the pattern: 1, 1, 2, 3, 5, 8, ?
- 10
- 13
- 12
- 11
Correct!Wrong!Explanation
This is the Fibonacci sequence where each number is the sum of the two preceding: 5+8=13. -
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11 If a doctor gives you three pills and tells you to take one every half hour, how long will they last?
- 1 hour
- 1.5 hours
- 2 hours
- 3 hours
Correct!Wrong!Explanation
Take first pill at time 0, second at 0.5 hour, third at 1 hour. So they last 1 hour (from first to last). -
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12 Which word does NOT belong with the others?
- Tyre
- Car
- Steering wheel
- Engine
Correct!Wrong!Explanation
Tyre, steering wheel, and engine are parts of a car. A car is the whole vehicle, not a part. -
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13 If you were running a race and you passed the person in second place, what place are you in?
- First
- Third
- Second
- Fourth
Correct!Wrong!Explanation
If you pass the person in second, you take their place, so you become second. -
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14 How many months have 28 days?
- 1
- 2
- 4
- 12
Correct!Wrong!Explanation
All 12 months have at least 28 days. -
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15 If a rooster lays an egg on top of a barn, which way does it roll?
- North
- South
- East
- Roosters don't lay eggs
Correct!Wrong!Explanation
Roosters do not lay eggs; only hens do. So the scenario is impossible. -
Quiz: Pass This Difficult Logic Test
Created on- Quiz resultYou scoredCorrect!
- Quiz result
Logic Novice
You scoredCorrect!You got 0-5 correct. Logic puzzles can be tricky, but practice makes perfect! - Quiz result
Reasoning Rookie
You scoredCorrect!You got 6-10 correct. You have a solid grasp of logic, but there's room to improve. - Quiz result
Logic Master
You scoredCorrect!You got 11-15 correct. Outstanding! You have exceptional logical reasoning skills.





