Find out the wrong number in the sequence. 623, 251, 543, 356
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623 should be wrong because the sum of the number is odd......the sum of all the other numbers are even
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Answer:
623 - 6×2=12 ; 1+2=3
251 - 2×5= 10 ; 1+0=1
543 - 5×4 = 20 ; 2+0 = 3
356 - 3×5 = 15 ; 1+5 = 6
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