mikinsleykinz mikinsleykinz
  • 01-10-2015
  • Mathematics
contestada

How many integers less than one billion are very round numbers

Respuesta :

jaygray jaygray
  • 12-10-2015
One digit: 9
2 digits: 9
...
9 digits:  9

9*9 = 81

81 is your answer
 
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