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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) 280 b) 290 c)286 d)296 Plz post the full solution quickly.

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) 280


b) 290


c)286


d)296


Plz post the full solution quickly.


 

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1 Answers

Badiuddin askIITians.ismu Expert
148 Points
13 years ago

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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