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in Quantitative Aptitude
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990 981 997 972
1008 ?
(a) 110
(b) 1020
(c) 900
(d) 959
(e) 725
in Quantitative Aptitude
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2 Answers

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990 , 997 = +7 (difference)

981 , 972 = -9

997 , 1008 = +11

972 , 959 = -13

So option d 959
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The pattern of the given series is as follows:

  • $990-3^2=981$
  • $981+4^2=997$
  • $997-5^2=972$
  • $971+6^2=1008$
  • $1008-7^2=959$

So option (D) is correct.

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