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Posted by on Thursday, September 1, 2011 at 10:31am.

Security codes in Fiji are made up of 4 digits. How many different 4-digit codes are possible

i)If the first digit cannot be zero.

ii)If the first digit cannot be zero and digits cannot be repeated.

  • MATH ( PROBABILITY) - , Sunday, April 24, 2016 at 7:37pm


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