Classification

Q: Find the odd number out:

Correct Answer: Option C (144). 144 is a perfect square (12^2), while all other numbers are perfect cubes (3^3, 4^3, 5^3).

Q: Find the odd number out:

Correct Answer: Option D (27). 27 is a composite number (divisible by 3 and 9), while all other options are prime numbers.

Q: Find the odd number out:

Correct Answer: Option D (36). 36 is a perfect square. All other numbers follow the pattern n*(n+1) [3*4=12, 4*5=20, 5*6=30].

Q: Find the odd number out:

Correct Answer: Option C (225). 225 is the square of a composite number (15), while all others are squares of prime numbers (11, 13, 17).

Q: Find the odd number out:

Correct Answer: Option B (520). 520 is of the form n^3 + n (8^3 + 8), while all others follow the pattern n^3 - n (5^3-5=120, 6^3-6=210, 7^3-7=336).

80 Questions

Practice Classification questions with answers and step-by-step solutions. These problems are curated from recent campus placement test papers (TCS, Infosys, Wipro, Cognizant, Accenture) and competitive government exams (SSC CGL, Bank PO, RRB NTPC, UPSC).

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Classification: Reference Context & Data Shared for questions below

Reference Caselet

Reasoning Ability: Classification (80 Questions)

In each of the following questions, four options are given, out of which three are alike in a certain way and one is different. Select the odd one out.

Q41

Find the odd number out:

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Q42

Find the odd number out:

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Q43

Find the odd number out:

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Q44

Find the odd number out:

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Q45

Find the odd number out:

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Classification

Find the odd number out:

Community Discussion & Shortcut Formulas

Find the odd number out:

Community Discussion & Shortcut Formulas

Find the odd number out:

Community Discussion & Shortcut Formulas

Find the odd number out:

Community Discussion & Shortcut Formulas

Find the odd number out:

Community Discussion & Shortcut Formulas