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What number do the three letters O, H and N represent in order to make this addition problem correct?

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What number do the three letters O, H and N represent in order to make this addition problem correct?

  O H
  O H
  O H
+ O H
 ______
  N O
posted Jun 10 by Udita

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1 Answer

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O can be either 1 or 2 because if O is greater than 2 than the answer would be a three digit number

4×H has to be a even number so O has to be 2 not 1. Only if H=3 we can have O=2.
Therefore the numbers are

23
23
23
23
92

ie., O = 2, H = 3 & N = 9.

answer Jun 10 by Tejas Naik



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