Awesome q2a theme
0 votes
A box contains 2 washers,3 nuts and 4 bolts. Items are drawn from the box at random one at time without replacement.the probability of drawing 2washers first followed by 3 nuts and 4 bolts is
in Mathematical Logic by (6 points) | 15 views

1 Answer

0 votes

This is by far the easiest probability sum that u can expect, if u avoid silly mistake on this line→ Items are drawn from the box at random one at time without replacement


If found helpful, UPVOTE and mark ans as the BEST ANSWER (by clicking the blue tick on the left side of the ans). This motivates me to ANSWER YOUR QUESTIONS IN FUTURE

by (1.6k points)
Can you please explain how you got that?

I calculated and found answer to be $24/105$ as follow:

$Total\space possible \space permutation = 9!  / (2!\space 3! \space 4!)$

$Total\space possible\space permuations\space that\space we\space want = 2!\space 3!\space 4!$

So $final\space probabilty = (2!\space 3!\space 4!) / (9!  / (2!\space 3! \space 4!)) = 24/105$

Can you suggest where I got wrong.
Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
Welcome to GATE CSE Doubts, where you can ask questions and receive answers from other members of the community.
Top Users Dec 2019
  1. Pratyush Priyam Kuan

    158 Points

  2. Vimal Patel

    118 Points

  3. avistein

    65 Points

  4. srestha

    54 Points

  5. Mk Utkarsh

    49 Points

  6. arya_stark

    46 Points

  7. goxul

    39 Points

  8. Sathuri Bharath

    34 Points

  9. vishal burnwal

    31 Points

  10. Shaik Masthan

    26 Points

Monthly Top User and those within 60% of his/her points will get a share of monthly revenue of GO subject to a minimum payout of Rs. 500. Current monthly budget for Top Users is Rs. 75.
2,313 questions
1,294 answers
89,719 users