OFAI Logical Reasoning and Deductive Thinking 3

Question 1

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?

Accepted Answer

The warehouse fire may or may not be arson

Answer

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.

Question 2

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?

Accepted Answer

They cannot complete Ladder Drills or Search and Rescue in order

Answer

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.

Question 3

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?

Accepted Answer

Medical emergencies

Answer

Central handles vehicle accidents; South does not handle medical, leaving structural fires for South; therefore North handles medical emergencies.

Question 4

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?

Accepted Answer

17 minutes

Answer

Net drain rate = 150 - 80 = 70 litres per minute; time to empty = 1,200 ÷ 70 ≈ 17.1 minutes, so approximately 17 minutes.

Question 5

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?

Accepted Answer

The entire crew must be evaluated before re-entry

Answer

The rule specifies the ENTIRE crew must be evaluated whenever ANY member reports symptoms — two members reporting triggers this for all.

OFAI - Firefighter Aptitude Test Ontario Practice Test

OFAI - Firefighter Aptitude Test Ontario Practice Test

OFAI Logical Reasoning and Deductive Thinking 3