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The given series is $2,9,28,65,126,216,344$

  • $2=1^{3}+1$
  • $9=2^{3}+1$
  • $28=3^{3}+1$
  • $65=4^{3}+1$
  • $126=5^{3}+1$
  • $6^{3}+1=216+1=217$
  • $344=7^{3}+1$

$\therefore$ Wrong number in the series is $216.$

So, the correct answer is $(B).$

Answer:

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