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A letter is known to have either come from LONDON or CLIFTON. On the envelope just two consecutive letters ON are visible. What is the probability that the letter has come from (i)LONDON (ii)CLIFTON?

Asked by sriram6102 11th January 2019, 8:18 AM
Answered by Expert
If only two consecutive letteres of ON visible, then possible events are 
(1) ON from 2nd and third letters in LONDON
(2) ON from 5th and 6th letters from LONDON
(3) ON from 6th and 7th letters from CLIFTON
for LONDON probability is 2/3 , because two possible events out of 3 
for CLIFTON probability is 1/3, because only one possible event out of one

Answered by Expert 11th January 2019, 10:18 AM
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