Deductive items give you rules and ask what must follow. Here are the usual layouts, then one ordering puzzle solved from the first clue to the last.
Deductive reasoning means drawing conclusions that are guaranteed by the information given. The question types look different, but the method is the same: restate the rules in your own shorthand, combine them, and accept only conclusions that cannot fail.
Different publishers call these deductive, logical or critical reasoning tests. The label matters less than the question: is the conclusion forced by the premises?
The trap in syllogisms is that a conclusion can sound true without being forced. Take: All sprinters are athletes. Some athletes are vegetarians. Therefore some sprinters are vegetarians. It does not follow. The athletes who are vegetarians might all be non-sprinters. A model with three people shows this: one sprinter-athlete who eats meat, and two other athletes, one of whom is vegetarian. Both premises hold and the conclusion fails, so the conclusion is not guaranteed.
By contrast, All sprinters are athletes. All athletes are trained. Therefore all sprinters are trained does follow, because there is no room for a sprinter outside the "trained" group. (Both of these verdicts were checked by exhaustively testing every arrangement of three people across the three groups.)
Suppose the rule is: any parcel over 20 kg must be sent by freight. Parcel A went by courier. What can you conclude? Parcel A is not over 20 kg, because if it were, the rule would have forced freight. This reasoning, from "not Q" back to "not P", is valid. The tempting opposite is not valid: knowing that parcel B went by freight tells you nothing about its weight, because the rule does not say that only heavy parcels use freight.
Five colleagues, Ana, Ben, Cora, Dev and Elin, sit in a row of five seats numbered 1 to 5 from left to right. The clues are:
A logic grid works like the seating puzzle but with several categories. Draw a small table, mark each clue as a tick or a cross, and let every tick cross out the rest of its row and column. Most solutions are found by elimination, not by inspiration. If a clue seems to say nothing, hold it and return once more cells are filled.
Deductive items are part of logical reasoning. Upload a screenshot of a practice puzzle to ReasonEra, pick "Tutor Explanation", and compare its sequence of eliminations with your own. The aim is to learn which clue to use first. Never copy an answer without understanding the chain of reasoning.
The free logical reasoning practice test offers ten original timed questions. A free account includes 3 trials, and the 14-Day Pass costs 49 € for unlimited use for 14 days.
ReasonEra exists to teach the method behind each answer, but a real assessment usually comes with its own conditions on outside help, so follow the rules you agreed to when you accepted the invitation.
It is a test in which the conclusion must follow with certainty from the information given. Typical items include syllogisms, rule-based questions and ordering puzzles.
Deductive reasoning gives conclusions that are guaranteed by the premises, while inductive reasoning finds the most likely pattern or rule from examples. Many test providers use the two terms differently, so check the publisher's description.
Start with the most restrictive clue, such as a fixed position or an end seat, then test each remaining case until it works or breaks. Check the final arrangement against every clue.
They should not, and you should treat the premises as true even if they sound odd. The point is whether the conclusion follows from them.
Solve a few puzzles each day, write your own shorthand and review the clue you used first. ReasonEra's explained answers and the free logical reasoning practice test can help.
Upload a practice question and compare the reasoning with your own. A free account starts you with three trials.
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Notes. The guide summarises widely published practice, so confirm specifics with the recruiter. Please report errors to info@reasonera.com.