Free Critical Thinking MCQs with Answers
435 Critical Thinking MCQs from Analytical and Logical Reasoning, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Critical thinking examines how conclusions follow from evidence, including claims, assumptions, arguments, inferences and relevant facts. Questions ask you to identify hidden assumptions, distinguish strong from weak evidence, assess cause and effect, recognise common reasoning errors, and decide which statement strengthens or weakens an argument.
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Read the Critical Thinking notesFree MDCAT chapter notes with key terms435 questions · page 19 of 22
- A. Snakes
- B. Hippos
- C. Horses
- D. Lions
Explanation: The relationship in this analogy is prey to predator: mice are hunted by cats, and goats are hunted by lions.
Correct answer: Lions- A. Monday
- B. Tuesday
- C. Friday
- D. August
Explanation: Monday, Tuesday and Friday are days of the week. August is a month, so it is the odd one out.
Correct answer: August- A. 12
- B. 18
- C. 24
- D. 25
Explanation: 12, 18 and 24 are all divisible by 6. 25 is not divisible by 6, so it is the odd number.
Correct answer: 25- A. January
- B. March
- C. May
- D. June
Explanation: January, March and May each have 31 days. June has 30 days, so it does not share the property.
Correct answer: June- A. 12
- B. 18
- C. 24
- D. 25
Explanation: 12, 18 and 24 can each be divided by 6 without a remainder. 25 is not a multiple of 6, so it is the odd one out.
Correct answer: 25- A. Rose
- B. Tulip
- C. Lily
- D. Carrot
Explanation: Rose, tulip and lily are all flowers. Carrot is a vegetable, so it does not share the property.
Correct answer: Carrot- A. 8
- B. 27
- C. 64
- D. 100
Explanation: 8 is 2 cubed, 27 is 3 cubed, and 64 is 4 cubed. 100 is not a perfect cube.
Correct answer: 100- A. Monday
- B. Tuesday
- C. Friday
- D. January
Explanation: Monday, Tuesday and Friday are days of the week. January is the name of a month, so it is the odd one out.
Correct answer: January- A. EARTH
- B. HEART
- C. HATER
- D. HOUSE
Explanation: EARTH, HEART and HATER all use the letters A, E, H, R and T. HOUSE uses a different set of letters.
Correct answer: HOUSE- A. 6
- B. 15
- C. 28
- D. 36
Explanation: 6, 15 and 28 are the 3rd, 5th and 7th triangular numbers. 36 is the 8th triangular number, so its position is even.
Correct answer: 36- A. 8
- B. 27
- C. 64
- D. 125
Explanation: 8, 27 and 125 are 2 cubed, 3 cubed and 5 cubed, and all three roots are prime. 64 is 4 cubed, but 4 is not prime.
Correct answer: 64- A. 6
- B. 20
- C. 42
- D. 54
Explanation: 6 equals 2 times 3, 20 equals 4 times 5, and 42 equals 6 times 7. 54 cannot be formed from consecutive integers in this way.
Correct answer: 54373. Three numbers are prime, and their digits remain prime when reversed. Which number is different?
- A. 13
- B. 17
- C. 31
- D. 27
Explanation: 13 and 31 are prime reversals of each other, while 17 reverses to 71, also prime. 27 is not prime, and its reversal 72 is not prime either.
Correct answer: 27- A. 6
- B. 15
- C. 28
- D. 36
Explanation: The numbers 6, 15 and 28 are triangular numbers at positions 3, 5 and 7. Although 36 is also triangular, it is at position 8, which is even.
Correct answer: 36- A. Sparrow
- B. Eagle
- C. Pigeon
- D. Rabbit
Explanation: Sparrow, eagle, and pigeon are all birds. Rabbit is a mammal, so it is the only animal in a different group.
Correct answer: Rabbit- A. 18
- B. 42
- C. 76
- D. 55
Explanation: 18, 42, and 76 are even numbers because they are divisible by 2. 55 is odd, so it is the odd one out.
Correct answer: 55- A. 16
- B. 25
- C. 49
- D. 50
Explanation: 16 is 4 squared, 25 is 5 squared, and 49 is 7 squared. 50 is not the square of a whole number.
Correct answer: 50- A. Level
- B. Radar
- C. Civic
- D. Table
Explanation: Level, radar, and civic remain unchanged when their letters are reversed. Table does not have this palindrome property.
Correct answer: Table- A. 18
- B. 27
- C. 45
- D. 52
Explanation: The digit sums of 18, 27, and 45 are all 9. The digits of 52 add up to 7, so it does not fit.
Correct answer: 52- A. 10
- B. 14
- C. 21
- D. 25
Explanation: 10, 14, and 21 each have four positive factors. The factors of 25 are only 1, 5, and 25, giving it three factors.
Correct answer: 25