GCAT Reasoning 4 — Questions and Answers
Question 1: Some doctors are athletes. All athletes exercise daily. Which must be true?
- All doctors exercise daily
- Some doctors exercise daily (Correct answer)
- No doctors exercise daily
- All who exercise daily are doctors
Correct answer: Some doctors exercise daily
Those doctors who are athletes must exercise daily, so at least some doctors exercise daily.
Question 2: Look at the sequence: 2, 5, 10, 17, 26, ___. What comes next?
- 35
- 37 (Correct answer)
- 38
- 36
Correct answer: 37
The differences are 3, 5, 7, 9, 11 — the next term is 26 + 11 = 37.
Question 3: A box contains 3 red, 4 blue, and 5 green balls. If one ball is drawn at random, what is the probability it is NOT red?
- 1/4
- 3/4 (Correct answer)
- 1/3
- 2/3
Correct answer: 3/4
Non-red balls = 4 + 5 = 9; total = 12; probability = 9/12 = 3/4.
Question 4: Which shape comes next in the pattern: Circle, Square, Triangle, Circle, Square, ___?
- Circle
- Square
- Triangle (Correct answer)
- Pentagon
Correct answer: Triangle
The pattern repeats every three shapes: Circle, Square, Triangle — so the next is Triangle.
Question 5: Five people stand in a line. Ann is third. Ben is immediately to Ann's left. Who is second?
- Ann
- Ben (Correct answer)
- Cannot be determined
- The person to Ann's right
Correct answer: Ben
If Ann is third and Ben is immediately to her left, Ben occupies the second position.
Question 6: Which statement logically weakens the argument: 'Students who sleep 8 hours score higher on tests'?
- Some students sleep 9 hours and score even higher
- High-scoring students tend to be less stressed and sleep better (Correct answer)
- Students who study more also sleep 8 hours
- Most students sleep fewer than 8 hours
Correct answer: High-scoring students tend to be less stressed and sleep better
If better performance causes better sleep (reverse causation), then sleep isn't causing the higher scores.
Question 7: If 6 workers build a wall in 10 days, how many days will 4 workers take to build the same wall?
- 12 days
- 15 days (Correct answer)
- 8 days
- 18 days
Correct answer: 15 days
Total work = 6 × 10 = 60 worker-days; 60 ÷ 4 = 15 days.
GCAT Reasoning 4
Some doctors are athletes.
All athletes exercise daily.
Which must be true?