Practice Odd One Out MCQs for ISSB - PAF Officer Selection intelligence — topic-wise sets with solved answers.
Q1. Find the odd one out: Circle, Square, Triangle, Cube
Answer: Cube
Explanation: Circle, square, triangle are 2D shapes. Cube is 3D (a solid). ISSB intelligence tests often mix dimensions.
Q2. Odd one out: Triangle, Square, Circle, Rectangle
Answer: Circle
Explanation: Circle has no straight sides; others are polygons. Identify the relationship between the pair, then apply the same logic to the choices.
Q3. Odd one out: K2, Nanga Parbat, Mount Everest, Broad Peak
Answer: Mount Everest
Explanation: Everest is in Nepal/China, not a Pakistani peak. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q4. Odd one out: January, March, April, June
Answer: January
Explanation: January has 31 days; others listed have 30 days (in non-leap context for April/June).
Q5. Odd one out: Mercury, Venus, Earth, Moon
Answer: Moon
Explanation: Moon is a satellite of Earth. The others are planets orbiting the Sun.
Q6. Find the odd pair: Hand-Foot, Eye-Ear, Arm-Leg, Head-Toe
Answer: Head-Toe
Explanation: Head and toe are not a natural opposite pair like upper limb vs lower limb or sense organs.
Q7. Which does not belong: Square, Rectangle, Rhombus, Circle
Answer: Circle
Explanation: Circle has no straight sides. The others are quadrilaterals or special four-sided figures.
Q8. Odd one: January, April, June, September
Answer: January
Explanation: January has 31 days. The others listed have 30 days each. Identify the relationship between the pair, then apply the same logic to the choices.
Q9. Find the odd one out: Captain, Major, Colonel, Teacher.
Answer: Teacher
Explanation: Captain, Major, and Colonel are military ranks. Teacher is a civilian profession, so it is the odd one.
Q10. Find the odd one out: Square, Circle, Triangle, Cube.
Answer: Cube
Explanation: Square, circle, and triangle are plane figures. Cube is a solid three-dimensional figure.
Q11. Find the odd one out: 16, 25, 36, 48, 64.
Answer: 48
Explanation: Sixteen, 25, 36, and 64 are perfect squares. Forty-eight is not a perfect square.
Q12. Find the odd one out: Apple, Mango, Carrot, Banana.
Answer: Carrot
Explanation: Apple, mango, and banana are fruits. Carrot is a vegetable, so it is the odd one.
Q13. Find the odd one out: Circle, Triangle, Square, Cube.
Answer: Cube
Explanation: Circle, triangle, and square are plane figures. Cube is a solid, so it is odd.
Q14. Find the odd one out: Mercury, Venus, Mars, Moon.
Answer: Moon
Explanation: Mercury, Venus, and Mars are planets. The Moon is a satellite, so it is odd.
Q15. Find the odd one out: Dog, Cat, Cow, Car.
Answer: Car
Explanation: Dog, cat, and cow are animals. Car is a vehicle, so it is odd.
Q16. Find the odd one out: Red, Blue, Green, Chair.
Answer: Chair
Explanation: Red, blue, and green are colors. Chair is furniture. Identify the relationship between the pair, then apply the same logic to the choices.
Q17. Find the odd one out: Square, Circle, Triangle, Apple.
Answer: Apple
Explanation: Square, circle, and triangle are shapes. Apple is a fruit. Identify the relationship between the pair, then apply the same logic to the choices.
Q18. Find the odd one out: January, March, June, Sunday.
Answer: Sunday
Explanation: January, March, and June are months. Sunday is a day. Identify the relationship between the pair, then apply the same logic to the choices.
Q19. Find the odd one out: Mango, Apple, Potato, Banana.
Answer: Potato
Explanation: Mango, apple, and banana are fruits. Potato is a vegetable. Identify the relationship between the pair, then apply the same logic to the choices.
Q20. Odd one out: Rose, Lily, Lotus, Mango.
Answer: Mango
Explanation: Rose, lily, and lotus are flowers. Mango is a fruit. Identify the relationship between the pair, then apply the same logic to the choices.
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