A variable name in a certain computer language must be either an alphabet or a alphabet followed by decimal digit.Total number of different variable names that can exist in that language is:a) 280b) 290c)286d)296Plz post the full solution quickly.

Dear Priyansh

case1:  variable name has only alphabet

  total number of alphabet =26

case 2:  variable name has both alphabet and decimal

  total number = 26*10 =260

so total possibility = 260 + 26 = 286

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