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C 1 A, E 4 C, G 9 E, I 16 G, ?

  • A.J27L
  • B.K25I
  • C.L26Q
  • D.M25P

Answer: B

The next term is K25I.

Each term has three parts, each following its own pattern:

  • First letter: C, E, G, I, so skipping one letter each time, next K.
  • Number: 1, 4, 9, 16, the squares of 1 to 4, next \(5^{2} = 25\).
  • Last letter: A, C, E, G, also skipping one, next I.

That gives K 25 I. J27L, L26Q and M25P each break at least one of the three patterns; M25P has the right number but the wrong letters.

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