Given 11^2 = 121 and 111^2 = 12321, the pattern suggests 1111^2 =

  1. 12344321
  2. 1233321
  3. 123321
  4. 1234321
Answer

D) 1234321

The digits rise to the number of ones and fall again: 1111^2 = 1234321. SLO M-09-A-10 · Understanding

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