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125, 126, 124, 127, 123, 129

  • A.123
  • B.124
  • C.126
  • D.127
  • E.129

Answer: E

Correct answer: 129

The series should add and subtract by turns, the amount rising each time: \( 125+1=126 \), \( 126-2=124 \), \( 124+3=127 \), \( 127-4=123 \), and then \( 123+5=128 \). The last term is given as 129, so that is the wrong one.

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