144, 196, 216, 256, 289 - which is the odd one out?
Show answer & explanation
Correct answer: C
Explanation
Check the pattern among the given numbers:
• 144 = 122
• 196 = 142
• 216 = 63 (not a perfect square)
• 256 = 162
• 289 = 172
All numbers are perfect squares except 216, which is a perfect cube.
Therefore, the odd one out is 216.