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198, 194, 185, 169, ?

  • A.92
  • B.112
  • C.136
  • D.144

Answer: D

Correct answer: 144

The amounts taken away are successive squares: \( 198-194=4 \), \( 194-185=9 \), \( 185-169=16 \). The next is \( 25 \), giving \[ 169 - 25 = \mathbf{144} \]

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