There are 4 letters, 1 for Sharmaji, 1 for vermaji and 1-1 for Agrawalji and puriji. These letter

M4maths Previous Puzzles

03 Jun 2010 probability to letter post?

There are 4 letters, 1 for Sharmaji, 1 for vermaji and 1-1 for Agrawalji and puriji. These letters are enveloped
without writing address. If letter of Sharmaji is posted correctly, then the probability that all the letters posted correctly is

OPtion

1) 1/5
2) 2/5
3) 1/3
4) 1/2
5) 2/3
6) 2/7
7) 1/4
8) 1/6
9) 3/4
10) 4/5

Solution

If letter of Sharmaji is posted correctly, then possibilities for other letters are 3*2*1 = 6
In these possibilities only 1 has all the letters posted correctly. Hence probability = 1/6

Correct Option: 8 Best Solution (6)