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Find the odd number / letters / word from the given alternative:
Answer & Solution
Correct Answer:
Option
D
All other numbers expressed as a power of 2 minus one.
Thus, 7 = 23 - 1, 15 = 24 - 1, 31= 25 - 1
Thus, 7 = 23 - 1, 15 = 24 - 1, 31= 25 - 1
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Login3^2 + 4 = 13
5^2 + 6 = 31
7^2 + 8 = 57
Hence answer is B since it does not follow the logic.