Q200
Find the odd number / letters / word from the given alternative:
A.
7
B.
15
C.
31
D.
57
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
All other numbers expressed as a power of 2 minus one.Thus, 7 = 23 - 1, 15 = 24 - 1, 31= 25 - 1