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Find the one which does not belong to that group ?


 Find the one which does not belong to that group ?
A. 36
B. 49
C. 64
D. 81
E. 100

 Answer: Option B
Explanation:
36 = 62, 49 = 72, 64 = 82, 81 = 92 and 100 = 102.
36, 64, 81 and 100 are squares of composite numbers, but not 49.
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