Hotel Rooms

Written on 12:18 am by Vja Students

In a hotel, rooms are numbered from 101 to 550. A room is chosen at random. What is the probability that room number starts with 1, 2 or 3 and ends with 4, 5 or 6?

Solution:
0.20

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3 Comments

  1. Mani - மணிமொழியன் | 14 November 2007 at 2:48 am

    0.2 ?

     
  2. Unknown | 14 November 2007 at 10:54 pm

    This comment has been removed by the author.

     
  3. Unknown | 14 November 2007 at 11:02 pm

    104,105,106,114,115,116....
    so from 100 to 200 we have 30 such numbers. Similarly 200 to 300 v have 30 & 30 more from 300 to 400.
    so, total such no. are 90 out of 450....the probability of getting such no. is 90/450.....0.2

     

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