a letter is known to hav come either from 'tatanagar' or 'calcutta' . on envelop, just 2 letters 'ta' r visible.what is d probability that letter has come from
1) tatanagar
2) calcutta

• as per question 'ta' are visible, so total number of 'ta' in both tatanagar & calcutta are 3, so,
  1) tatanagar:- 2/3
  2) calcutta:- 1/3
  
  
  this question should not be treated as per 't' & 'a' because in that case order of 't' and 'a' will be there in consideration.
• 11 years agoHelpfull: Yes(1) No(0)
• If t,a are just beside each other , probability = 2/3
  If they are not side by side => probability = 7/9
• 11 years agoHelpfull: Yes(0) No(1)