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PRATEEK SHEORAN

· started a discussion

· 1 Months ago

other method (Question: 146142.0 )

A B and D are divisible by 3 and C is not

Question:
Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to that group?
Options:
A) 123
B) 171
C) 227
D) 147
Solution:
123  =   (11)2  +  2
171  =   (13)2  +  2
227  =   (15)2  +  2
147  =   (12)2  +  3

Knowledge Expert

· commented

· 1 Months ago

Dear student
As per the logic used here,
given answer is appropriate.

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