Find the odd man out: ABB, BCC, CCCDDDD, DDDDEEEEE, BBCCC

Question

Can anyone find the odd man out - 396, 462, 572, 427, 671, 264

Please explain your answer with the working.

Answer 1

Number of letters as per their number in alphabet
ABB - 122
BCC - 233 odd one out
BBCCC - 22333
CCCDDDD - 3334444
DDDDEEEEE - **********

Answer 2

The right sequence should be ABB, BBCCC, CCCDDDD, DDDDEEEEE where, in every group, the second letter is repeated in the next group. Hence, BCC is the odd man out.