Critical Thinking Practice Tests

  • 1) You have only an 8-liter jug and a 3-liter jug. Both containers are unmarked. You need exactly 4 liters of water.

    How can you get it, if a water faucet is handy?

    Question from Classroom Quickies • Show/Hide Solution

    Answer: Fill the 3-liter jug three times, each time dumping the water from it into the 8-liter jug. The third time, this will leave one liter of water in the 3-liter jug, and the 8-liter jug will be filled. Dump the water from the 8-liter jug down the drain, and then empty the one liter of water from the 3-liter jug into the 8-liter jug. Now fill the 3-liter jug again and dump the water into the 8-liter jug. The 8-liter jug now contains 4 liters of water. Various answers are possible.

  • 2) What can you add to 1,000,000 and always get more than if you multiplied the 1,000,000 by the same value?

    Question from Scratch Your Brain • Show/Hide Solution

    Answer: zero, any number less than and including 1.000001, any fraction less than a whole, or any negative number.

  • 3) Determine the common saying depicted in these verbal picture puzzles.

    a. DECI     SION
    b. ANOTHER     ONE

    Question from Think-A-Grams • Show/Hide Solution

    Answer: a. split decision; b. one after another

  • 4) What is the 50th number in this sequence?

    Explain how you got your answer.
    5, 11, 17, 23, 29, 35, 41, …

    Question from Dr. Funster’s Think-A-Minutes • Show/Hide Solution

    Answer: 299. The pattern involves a difference of 6 between adjacent terms of the sequence. Add 6 to 5, getting 11, then add 6 to 11, getting 17, then add 6 to 17, getting 23, etc., until 6 has been added 50 times, ending in 299. Answer explanations will vary.

  • 5) Determine both one-word answers.

    The floor of ship or boat,
    They walk on me at sea;
    Where there’s a C, make it an S,
    At school you sit on me.

    What am I? _______________

    Question from Spelling DooRiddles • Show/Hide Solution

    Answer: Deck, desk

  • 6) The reason he gave the press for leaving his job was illness and fatigue. That wasn’t exactly the truth and it wasn’t exactly a lie.

    Why did he leave?

    Question from Red Herring Mysteries • Show/Hide Solution

    Answer: He was the coach of a professional ball team. The teams owner fired him because he was sick and tired of the teams dismal performance. NOTE: Other explanations are accepted. Per the rules explained in the book one person is supposed to know the actual answer and the player(s) must ask "yes" or "no" questions to deduce the answer. This sample question is simply a fun way to practice critical and creative thinking.

  • 7) Determine both one-word answers.

    Another word for sick,
    Your forehead is quite hot;
    Now put an H in front,
    A mountain I am not.

    What am I?______________

    Question from Spelling DooRiddles • Show/Hide Solution

    Answer: a. ill; b. hill

  • 8) Use the clues to solve the puzzle.

    A duck, a goose, a goat, and a horse all entered the barn at different times one day last week.
    a. A mammal entered the barn first.
    b. The duck entered before the goose.
    c. The goose entered ahead of the horse.

    Who entered the barn first? ____________

    Question from Dr. Funster’s Creative Thinking Puzzlers • Show/Hide Solution

    Answer: the goat

  • 9) Determine the common term or phrase depicted in these verbal picture puzzles.

    a. CHIEDITOREF
    b. T   2222

    Question from Think-A-Grams • Show/Hide Solution

    Answer: a. Editor in Chief; b. Tea for two

  • 10) Use the addition, subtraction, multiplication and division symbols once each to make these equations true.

    a. 600 __ 200 __ 400 __ 300 __ 200 = 200
    b. 200 __ 300 __ 600 __ 400 __ 200 = 200

    Question from Dr. Funster’s Quick Thinks Math • Show/Hide Solution

    Answer: a. 600 x 200 / 400 - 300 + 200 = 200; b. 200 / 300 x 600 - 400 + 200 = 200

  • 11) While relaxing on the deck outside her cabin one summer evening, Vivian fell into a deep trance-like sleep. When she awoke, she felt as if she had slept only an hour or two, but it was now the middle of winter.

    How could this be?

    Question from Red Herring Mysteries • Show/Hide Solution

    Answer: Vivian was on the patio of her first class cabin on a cruise ship. She fell asleep just before the ship crossed the equator on a trip from Hawaii to New Zealand. The equator is the dividing line between the opposite seasons. She fell asleep north of the equator while in the middle of summer and awoke two hours later south of the equator in the middle of winter. NOTE: Other explanations are accepted. Per the rules explained in the book one person is supposed to know the actual answer and the player(s) must ask "yes" or "no" questions to deduce the answer. This sample question is simply a fun way to practice critical and creative thinking.

  • 12) What do you get when a math teacher is a magician? ________________


    Question from Scratch Your Brain • Show/Hide Solution

    Answer: Tricky Problems


  • Answers to Questions:
    1) Fill the 3-liter jug three times, each time dumping the water from it into the 8-liter jug. The third time, this will leave one liter of water in the 3-liter jug, and the 8-liter jug will be filled. Dump the water from the 8-liter jug down the drain, and then empty the one liter of water from the 3-liter jug into the 8-liter jug. Now fill the 3-liter jug again and dump the water into the 8-liter jug. The 8-liter jug now contains 4 liters of water. Various answers are possible.

    2) zero, or any fraction less than a whole, or any negative number

    3) a. split decision; b. one after another

    4) 299. The pattern involves a difference of 6 between adjacent terms of the sequence. Add 6 to 5, getting 11, then add 6 to 11, getting 17, then add 6 to 17, getting 23, etc., until 6 has been added 50 times, ending in 299. Answer explanations will vary.

    5) Deck, desk

    6) He was the coach of a professional ball team. The team’s owner fired him because he was “sick and tired” of the team’s dismal performance.

    7) a. ill; b. hill

    8) the goat

    9) a. Editor in Chief; b. Tea for two

    10) a. 600 x 200 / 400 - 300 + 200 = 200; b. 200 / 300 x 600 - 400 + 200 = 200

    11) Vivian was on the patio of her first class cabin on a cruise ship. She fell asleep just before the ship crossed the equator on a trip from Hawaii to New Zealand. The equator is the dividing line between the opposite seasons. She fell asleep north of the equator while in the middle of summer and awoke two hours later south of th equator in the middle of winter.

    12) Tricky Problems


    The Free Critical Thinking Quizzes are promotional quizzes, not be confused with our time tested and academically sound Cornell Critical Thinking Tests.

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    About Critical Thinking Tests

    Critical thinking tests measure an individual’s ability to make analyse, conceptualise and reason effectively. Critical thinking tests can measure critical thinking in a number of ways, and critical thinking tests often comprise multiple different sub-tests within a single test. Critical thinking tests are common selection tool for roles which require significant critical, independent thought, particularly in the legal sector. Although critical thinking tests primarily measure cognitive ability, there is often a learned, developable aspect to critical thinking, which allows individuals to improve their critical thinking skills, and subsequent scores on critical thinking tests. Candidates taking critical thinking tests may also be required to complete other assessments, which may include personality, situational judgement or other aptitude tests.

    Psychological research has found critical thinking tests to be highly valid predictors of future performance in work and education. As a result, job candidates may be asked to complete a critical thinking test as part of an organisations selection process. Organisations are likely to use a critical thinking test in a number of possible ways. Firstly, a critical thinking test may be used as an early screening tool, identifying high potential candidates early in the selection process. Secondly, a critical thinking test may be used in conjunction with an interview, either before the interview or shortly after. Finally, candidates may be required to complete a critical thinking test during an assessment centre, at the final stages of the selection process. Regardless of when the critical thinking test is administered, passing it is essential to maximising your chances of being selected by that organisation.

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