Paper 1 · Mathematical Reasoning and Aptitude
Find the odd number: 324, 244, 136, 352.
A324 ✓ Correct
B244
C136
D352
Correct answer: (A) 324 — 324 is the odd number, so that is the answer.
Explanation
★324 is the odd number, so that is the answer.
★Check whether each number is a perfect square.
★324 is 18 squared, so it is a perfect square.
★244, 136 and 352 are not perfect squares of whole numbers.
★So 324 differs from the other three.
★So the odd number is 324.
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