4,7,13,25,49,(  )

4,7,13,25,49,(  ) A.80 B.90 C.92 D.97

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3,11,13,29,31,(  )

3,11,13,29,31,(  ) A.47 B.55 C.63 D.79

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12,16,14,15,(  )

12,16,14,15,(  ) A.13 B. C.17 D.20

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1,3,3,6,7,9,13,12,(  ),(  )

1,3,3,6,7,9,13,12,(  ),(  ) A.19,18 B.19,15 C.21,15 D.27.18

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28,23,19,16,14,(  )

28,23,19,16,14,(  ) A.14 B.15 C.16 D.13

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