IDAT Logical Reasoning Puzzles 2 — Questions and Answers
Question 1: Five houses in a row are painted red, blue, green, yellow, and white. The green house is immediately to the left of the white house. The red house is first. The blue house is adjacent to the green house. Which house is blue?
- Second
- Third (Correct answer)
- Fourth
- Fifth
Correct answer: Third
Red is first; green-white must be consecutive, and blue is adjacent to green — placing green 3rd, white 4th, and blue 2nd or 4th; since white is 4th, blue must be 3rd.
Question 2: If all Bloops are Razzles, and all Razzles are Lazzles, which conclusion must be true?
- All Lazzles are Bloops
- All Bloops are Lazzles (Correct answer)
- No Lazzles are Bloops
- Some Razzles are not Lazzles
Correct answer: All Bloops are Lazzles
Transitivity of universal affirmatives: Bloops ⊂ Razzles ⊂ Lazzles, so all Bloops are Lazzles.
Question 3: A sequence follows a pattern: 2, 6, 18, 54, ___. What is the next number?
- 108
- 162 (Correct answer)
- 216
- 324
Correct answer: 162
Each term is multiplied by 3: 54 × 3 = 162.
Question 4: Tom is taller than Sam. Sam is taller than Raj. Raj is taller than Pita. Who is the shortest?
- Tom
- Sam
- Raj
- Pita (Correct answer)
Correct answer: Pita
The chain Tom > Sam > Raj > Pita places Pita at the bottom.
Question 5: All squares are rectangles. Some rectangles are rhombuses. Which statement is definitely true?
- All rectangles are squares
- Some squares are rhombuses (Correct answer)
- All rhombuses are rectangles
- No squares are rhombuses
Correct answer: Some squares are rhombuses
Since all squares are rectangles and some rectangles are rhombuses, it is possible (and actually true) that some squares are rhombuses — specifically squares themselves.
Question 6: A clock shows 3:15. What is the angle between the hour and minute hands?
- 0°
- 7.5° (Correct answer)
- 15°
- 22.5°
Correct answer: 7.5°
At 3:15, the minute hand is at 90° and the hour hand is at 97.5° (3×30 + 15×0.5), giving a difference of 7.5°.
Question 7: In a race, Ana finished before Ben. Carlos finished after Dan. Dan finished before Ana. Who finished second?
- Ana
- Ben
- Carlos
- Dan (Correct answer)
Correct answer: Dan
Order: Carlos unknown but after Dan; Dan before Ana before Ben gives Dan 2nd if Carlos is 1st: Carlos, Dan, Ana, Ben.
IDAT Logical Reasoning Puzzles 2
Five houses in a row are painted red, blue, green, yellow, and white.
The green house is immediately to the left of the white house.
The red house is first.
The blue house is adjacent to the green house.
Which house is blue?