OFAI Logical Reasoning and Deductive Thinking

Question 1

All firefighters at Station 7 are certified in First Aid. Marcus is certified in First Aid. Which of the following conclusions is valid?

Accepted Answer

Marcus may or may not be a firefighter at Station 7

Answer

Marcus is definitely a firefighter at Station 7

Answer

Marcus cannot be a firefighter at Station 7

Answer

All people certified in First Aid work at Station 7

Question 2

A fire crew responds only if both Truck A and Truck B are available. Truck A is unavailable today. What can be concluded?

Accepted Answer

The crew will not respond today

Answer

The crew will respond if Truck B is available

Answer

The crew may still respond if Truck B is available

Answer

Truck B's availability is irrelevant today

Question 3

If a building has more than 4 floors, it requires a sprinkler system. A building has 6 floors. Which conclusion must be true?

Accepted Answer

The building requires a sprinkler system

Answer

The building does not need a sprinkler system

Answer

Only buildings over 10 floors need sprinklers

Answer

The sprinkler system may or may not be required

Question 4

Five firefighters — A, B, C, D, and E — are ranked 1st through 5th. A ranks higher than C. D ranks lower than B but higher than E. C ranks higher than D. Who ranks last?

Accepted Answer

E

Answer

C

Answer

D

Answer

B

Question 5

All hazardous materials calls require Protective Equipment Level A. Firefighter Chen is responding to a hazmat call. What must be true?

Accepted Answer

Chen must use Level A equipment

Answer

Chen does not need Level A equipment

Answer

Chen may choose a lower protection level

Answer

Level A equipment is optional on hazmat calls

Question 6

Dispatch sends Engine 1 or Ladder 2 to every structure fire, but never both. Engine 1 was sent to the Pine Street fire. What can be concluded about Ladder 2?

Accepted Answer

Ladder 2 was not sent to Pine Street

Answer

Ladder 2 was also sent to Pine Street

Answer

Ladder 2 may or may not have been sent

Answer

The rule does not apply to structure fires

Question 7

Some rescue technicians are also paramedics. All paramedics complete 500+ clinical hours. Firefighter Rivera is a rescue technician but not a paramedic. Which must be true?

Accepted Answer

Rivera may or may not have completed 500+ hours

Answer

Rivera completed 500+ clinical hours

Answer

Rivera did not complete 500+ clinical hours

Answer

All rescue technicians complete 500+ hours