Logical Reasoning and Deductive Thinking Flashcards
7 cards from real OFAI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Logical Reasoning and Deductive Thinking flashcards as text
The fire investigation report states: 'Whenever accelerant is detected, the fire is classified as arson.' Accelerant was not detected at the warehouse fire. What is the correct conclusion?
Answer: The warehouse fire may or may not be arson
The rule tells us accelerant detection GUARANTEES an arson classification, but absence of accelerant does not rule out arson — other evidence could still lead to that classification.
Probationary firefighters must complete tasks in this order: Physical Training, Hose Drills, Ladder Drills, Search and Rescue. If a probationary firefighter skips Hose Drills, what happens?
Answer: They cannot complete Ladder Drills or Search and Rescue in order
Since the order is mandatory and Hose Drills come before Ladder Drills and Search and Rescue, skipping them means the subsequent tasks cannot be completed in the required sequence.
Three fire stations — North, South, and Central — each handle a different call type: structural fires, vehicle accidents, and medical emergencies. South does not handle medical. Central handles vehicle accidents. What does North handle?
Answer: Medical emergencies
Central handles vehicle accidents; South does not handle medical, leaving structural fires for South; therefore North handles medical emergencies.
A water tank holds 1,200 litres. A hose discharges at 150 litres per minute. A pump refills the tank at 80 litres per minute. How long before the tank is empty if both operate simultaneously?
Answer: 17 minutes
Net drain rate = 150 - 80 = 70 litres per minute; time to empty = 1,200 ÷ 70 ≈ 17.1 minutes, so approximately 17 minutes.
If any crew member reports symptoms of smoke inhalation, the entire crew must be evaluated by medical staff before re-entering the structure. Two crew members report symptoms. What is the required action?
Answer: The entire crew must be evaluated before re-entry
The rule specifies the ENTIRE crew must be evaluated whenever ANY member reports symptoms — two members reporting triggers this for all.
A fire inspector finds violations in 3 out of every 8 buildings inspected. If the inspector visits 40 buildings this month, how many are expected to have violations?
Answer: 15
3/8 × 40 = 15 buildings are expected to have violations based on the stated rate.
Firefighters must wear full personal protective equipment (PPE) unless (a) they are in a designated safe zone AND (b) a supervisor grants explicit permission. Firefighter Osei is in the safe zone but has not received supervisor permission. What must Osei do?
Answer: Wear full PPE until supervisor permission is granted
Both conditions — being in the safe zone AND having supervisor permission — must be met before PPE can be removed; since one condition is unmet, full PPE is required.