How to Use This Reasoning Practice Quiz
A correct-answer score, with no invented IQ conversion
Every question is worth one point. The five topic totals show where you got answers right in this set, not your general cognitive strengths. The quiz has no representative norming sample, standardized testing procedure, or validated conversion to an IQ scale. A score of 24 out of 30 means exactly that: 24 correct answers.
Practice puzzles and formal assessment serve different purposes. For comparison, British Mensa’s Online Workout explicitly distinguishes its entertainment quiz from an IQ test. MyQuizSpot is independent of Mensa and does not reproduce its test or qualify you for membership.
Check the rule, not just the answer letter
For a number pattern, state the intended rule and apply it to every displayed step. In logic questions, use only the stated premises. For spatial questions, check the orientation and type of cut. For percentages, identify the base each percentage acts on. The word questions use English vocabulary, so familiarity with those words affects your score.
For example, two discounts of 25% and then 10% are applied successively: $60 × 0.75 × 0.90 = $40.50. The second discount applies to $45, not the original $60. Use the answer guide below to work through any questions you missed.
For a more focused practice session, try the Math Quiz for numerical questions or the Vocabulary Quiz for words. Each uses a different question set, so compare the explanations rather than treating their scores as the same measure.
Answers and explanations
Spoilers below. Open a question to read the answer, even without completing the quiz.
1. What comes next in the sequence? 2, 6, 18, 54, ___
Answer: 162
Multiply each term by 3: 54 × 3 = 162.
2. Which number completes the pattern? 1, 1, 2, 3, 5, 8, 13, ___
Answer: 21
Each term is the sum of the previous two: 8 + 13 = 21.
3. Find the missing number: 3, 9, 27, ___, 243
Answer: 81
The intended rule multiplies by 3, so 27 × 3 = 81, followed by 243.
4. What comes next? A1, B2, C3, D4, ___
Answer: E5
Advance one letter and one number together: D4 is followed by E5.
5. Complete the sequence: 100, 81, 64, 49, ___
Answer: 36
The terms are descending squares: 10², 9², 8², 7², then 6² = 36.
6. What comes next? 2, 3, 5, 7, 11, 13, ___
Answer: 17
The intended list is the ascending prime numbers. After 13 comes 17; 15 is divisible by 3 and 5.
7. Assume roses exist. All roses are flowers. Some flowers fade quickly. Which statement MUST be true?
Answer: Some flowers are roses
The premises explicitly say roses exist and every rose is a flower. That guarantees some flowers are roses, but says nothing about whether those roses fade quickly.
8. In this logic puzzle, whenever it rains the ground is wet, with no drying. The ground is not wet. What follows from these rules?
Answer: It did not rain
Within the stated logical model, rain implies wet ground. Observing dry ground rules out rain under that premise. This is a deduction from the puzzle’s rules, not a model of real weather.
9. Sarah is taller than Mike. Mike is taller than Jane. Lisa is taller than Sarah. Who is the shortest?
Answer: Jane
The order from tallest to shortest is Lisa, Sarah, Mike, Jane.
10. A doctor says: "Not all of my patients need surgery." Which statement means the same thing?
Answer: Some of the patients do not need surgery
“Not all” means at least one patient does not need surgery. It does not say that none do or that most do.
11. If all Bloops are Razzies and all Razzies are Lazzies, then all Bloops are definitely:
Answer: Both Razzies and Lazzies
Every Bloop belongs to the Razzies, and every Razzie belongs to the Lazzies. Membership passes through both groups.
12. In a race, you overtake the runner in second place on the same lap. What position do you take?
Answer: Second place
On the same lap, passing the runner in second takes their position: you become second, while the leader remains first.
13. If you fold a square piece of paper in half diagonally, what shape do you get?
Answer: Triangle
Folding along a diagonal brings one half over the other, producing a triangle with a right angle and two equal sides.
14. A cube is cut through its center by a plane parallel to one of its faces. How many faces does each resulting piece have?
Answer: 6 faces
A cut through the center parallel to a face produces two rectangular cuboids. Each retains five outside faces and gains one cut face, giving six.
15. If you are facing north and turn 90 degrees clockwise, then 180 degrees counterclockwise, which direction are you facing?
Answer: West
North to east is a clockwise quarter-turn. A counterclockwise half-turn from east ends at west.
16. How many edges does a rectangular box (cuboid) have?
Answer: 12
There are four edges around the top, four around the bottom, and four connecting them: 12 in total.
17. A clock shows 3:15. What is the approximate angle between the hour and minute hands?
Answer: 7.5 degrees
The minute hand points at 90°. The hour hand is 15 minutes into the 3 o’clock hour, adding 7.5° to 90°. The smaller angle is 7.5°.
18. If you look at a mirror image of a clock, and it shows 2:30, what is the actual time?
Answer: 9:30
Reflecting a conventional analog clock in a vertical mirror reverses the dial. 12:00 minus the reflected 2:30 gives 9:30.
19. ELATED is to HAPPY as MOROSE is to:
Answer: Sad
Elated means very happy. Of the options, sad is closest to morose, which describes a gloomy or sullen mood.
Merriam-Webster: morose20. In ordinary food grouping, which is the root vegetable: apple, banana, carrot, or grape?
Answer: Carrot
In ordinary food grouping, carrot is the root vegetable in this list; apple, banana, and grape are fruits.
21. Choose the word that best completes the analogy: Book is to Reading as Fork is to:
Answer: Eating
The relationship is an object and its typical use: a book is for reading and a fork is for eating.
22. What is the meaning of the word UBIQUITOUS?
Answer: Found everywhere
Ubiquitous describes something present or found everywhere.
Merriam-Webster: ubiquitous23. ARCHITECT is to BUILDING as AUTHOR is to:
Answer: Book
The relationship pairs a creator with a creation: an architect designs a building and an author writes a book.
24. Which word is most nearly OPPOSITE in meaning to BENEVOLENT?
Answer: Malicious
Benevolent describes goodwill; malicious describes an intention to harm, so it is the closest opposite here.
Merriam-Webster: benevolent25. If a shirt costs $60 and is discounted by 25%, then an additional 10% off the sale price, what is the final cost?
Answer: $40.50
Apply the discounts successively: $60 × 0.75 = $45, then $45 × 0.90 = $40.50. Adding the discount percentages would use the wrong base for the second discount.
26. A train travels 240 miles in 4 hours. A car travels 180 miles in 3 hours. How much faster is the car per hour?
Answer: 0 mph — they are equal
Both average speeds are 60 mph: 240 ÷ 4 = 60 and 180 ÷ 3 = 60. Their difference is 0 mph.
27. Five identical machines, each working independently at a constant rate, produce five widgets in five minutes. How long do 100 such machines need to produce 100 widgets?
Answer: 5 minutes
With identical machines working independently at a constant rate, each produces one widget in 5 minutes. One hundred machines can therefore produce one hundred widgets together in 5 minutes.
28. What is 15% of 15% of 400?
Answer: 9
15% of 400 is 60; 15% of 60 is 9. Equivalently, 400 × 0.15 × 0.15 = 9.
29. A bacterial colony doubles every hour. If it fills a jar in 24 hours, when was the jar half full?
Answer: At 23 hours
Under the puzzle’s exact doubling assumption, one hour before the jar is full it is half full: hour 23.
30. Starting with empty 3-liter and 5-liter jugs and unlimited water, what is the fewest actions needed to leave exactly 4 liters in the larger jug? One action fills a jug, empties it, or pours until one jug is empty or the other is full.
Answer: 6 steps
Six actions work: fill the 5-liter jug; pour into the 3-liter jug; empty the 3-liter jug; transfer the remaining 2 liters into it; refill the 5-liter jug; pour 1 liter into the smaller jug until full. The larger jug holds 4 liters. Enumerating the allowed fill, empty, and pour actions gives no solution in fewer than six.
