tbrookover12 tbrookover12
  • 07-04-2021
  • Mathematics
contestada

which number multiplied by itself will give the output as 12345678987654321?​

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aroojumair2005
aroojumair2005 aroojumair2005
  • 07-04-2021

Answer:what we observe is that the square of the number follows a pattern: 2 1's gives 121. 3 1's gives 12321. so to get 12345678987654321 we need to get square of 9 1's(111,111,111).

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