Practice Odd One Out MCQs for FIA Telephone Operator (BS-07) math iq — topic-wise sets with solved answers.
Q1. Identify the odd one out: A) Square, B) Circle, C) Triangle, D) Rectangle
Answer: Circle
Explanation: All options except Circle are polygons, hence Circle is the odd one out due to having no sides or angles.
Q2. Which one is odd: A) 2, B) 4, C) 6, D) 9
Answer: 9
Explanation: All numbers except 9 are even, making 9 the odd one out due to being odd.
Q3. Find the odd one: A) 1 / 2, B) 2 / 4, C) 3 / 6, D) 3 / 5
Answer: 3 / 5
Explanation: All fractions except 3 / 5 simplify to 1 / 2, making 3 / 5 the odd one due to not simplifying to 1 / 2.
Q4. Identify the odd term: A) Mercury, B) Venus, C) Earth, D) Jupiter
Answer: Jupiter
Explanation: Mercury, Venus, and Earth are inner planets and relatively small, whereas Jupiter is a gas giant, making it the odd one.
Q5. Odd one out: A) Apple, B) Banana, C) Mango, D) Chair
Answer: Chair
Explanation: Apple, Banana, and Mango are fruits, while Chair is a piece of furniture, making it the odd one out.
Q6. Which is the odd number: A) 7, B) 11, C) 13, D) 15
Answer: 15
Explanation: 7, 11, and 13 are prime numbers, while 15 is not prime (divisible by 3 and 5), making it the odd one.
Q7. Identify the odd shape: A) Pentagon, B) Hexagon, C) Heptagon, D) Square
Answer: Square
Explanation: Pentagon, Hexagon, and Heptagon have 5, 6, and 7 sides respectively, all more than 4, whereas Square has 4 sides, making it the odd one.
Q8. Odd one out: A) Dog, B) Cat, C) Mouse, D) Car
Answer: Car
Explanation: Dog, Cat, and Mouse are animals, while Car is a vehicle, making it the odd one out.
Q9. Find the odd term: A) 2², B) 3², C) 4², D) 2³
Answer: 2³
Explanation: 2², 3², and 4² are squares of numbers, while 2³ is a cube, making it the odd one due to different exponent.
Q10. Identify the odd one: A) πr², B) 2πr, C) 4/3πr³, D) √π
Answer: √π
Explanation: πr², 2πr, and 4/3πr³ are formulas related to circle or sphere, while √π is not a formula, making it the odd one.
Q11. Odd one out: A) Football, B) Basketball, C) Tennis, D) Piano
Answer: Piano
Explanation: Football, Basketball, and Tennis are sports, while Piano is a musical instrument, making it the odd one out.
Q12. Which is odd: A) 10, B) 20, C) 30, D) 27
Answer: 27
Explanation: 10, 20, and 30 are multiples of 10, while 27 is not, making 27 the odd one out.
Q13. Identify the odd shape: A) Rhombus, B) Trapezoid, C) Parallelogram, D) Circle
Answer: Circle
Explanation: Rhombus, Trapezoid, and Parallelogram are quadrilaterals, while Circle is not a polygon, making it the odd one.
Q14. Odd one out: A) Book, B) Magazine, C) Newspaper, D) Chair
Answer: Chair
Explanation: Book, Magazine, and Newspaper are reading materials, while Chair is furniture, making it the odd one out.
Q15. Find the odd term: A) January, B) March, C) May, D) February
Answer: February
Explanation: January, March, and May have 31 days, while February has 28 or 29 days, making it the odd one.
Q16. Identify the odd number: A) 4, B) 9, C) 16, D) 25
Answer: 4
Explanation: 9, 16, and 25 are odd squares, while 4 is an even square, making it the odd one due to being even.
Q17. Odd one out: A) Guitar, B) Violin, C) Drums, D) Microphone
Answer: Microphone
Explanation: Guitar, Violin, and Drums are musical instruments, while Microphone is used for sound amplification, making it the odd one.
Q18. Which is the odd one: A) Red, B) Blue, C) Green, D) Square
Answer: Square
Explanation: Red, Blue, and Green are colors, while Square is a shape, making it the odd one out.
Q19. Identify the odd term: A) ∫x dx, B) ∫x² dx, C) ∫x³ dx, D) √x
Answer: √x
Explanation: ∫x dx, ∫x² dx, and ∫x³ dx are integrals, while √x is not an integral but a root, making it the odd one.
Q20. Odd one out: A) Python, B) Java, C) C++, D) Table
Answer: Table
Explanation: Python, Java, and C++ are programming languages, while Table is a piece of furniture, making it the odd one out.
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