|

Algebra

Scorching goIITian

 Joined: 18 Feb 2012 Post: 264
2 Apr 2012 14:48:18 IST
0 People liked this
19
625
for cricket fans who luv maths......
Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Algebra

IND VS AUS.wat are the ways in  which m.s dhoni can score 30 runs in the last over....provided every ball is legal.and no extras are conceded???remember gilchrist is the wicket keeper......

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
2 Apr 2012 15:51:38 IST
0 people liked this

there should be minimum 3 sixes to score 30 runs in an over ..........now if three six are hitted then the total no. of ways are(three four also)=6C3..now if 4 sixes are hitted(remaining 6 runs 4,2 or 6,0 or 3,3)=6C4{2!+2!+1}...now if five six are hitt(remaining 0)=6C5.

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
2 Apr 2012 15:53:37 IST
0 people liked this

so the the total no. of ways=6c3+6c4{2!+2!+1}+6c5

Scorching goIITian

Joined: 18 Feb 2012
Posts: 264
2 Apr 2012 16:33:31 IST
0 people liked this

wrong..

Scorching goIITian

Joined: 24 Aug 2011
Posts: 256
2 Apr 2012 16:54:30 IST
0 people liked this

well i guess the solution by tarun garg is rit..if the condition of hitting the helmet behind the keeper is not considered..but if it is considered than one more way is added when on all the six balls, the ball hits the helmet behing the keeper

Scorching goIITian

Joined: 24 Aug 2011
Posts: 256
2 Apr 2012 16:54:50 IST
0 people liked this

well i guess the solution by tarun garg is rit..if the condition of hitting the helmet behind the keeper is not considered..but if it is considered than one more way is added when on all the six balls, the ball hits the helmet behing the keeper

Scorching goIITian

Joined: 24 Aug 2011
Posts: 256
2 Apr 2012 16:55:38 IST
0 people liked this

on hitting the helmet behind the keeper.. 5 run is consided

Blazing goIITian

Joined: 2 Mar 2012
Posts: 308
2 Apr 2012 17:02:38 IST
0 people liked this

71

Scorching goIITian

Joined: 18 Feb 2012
Posts: 264
2 Apr 2012 23:30:52 IST
0 people liked this

KARTIK IS RYT..

Scorching goIITian

Joined: 18 Feb 2012
Posts: 264
2 Apr 2012 23:33:57 IST
0 people liked this

ACTUALLY he did mistake in the first step while doing combination....

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
3 Apr 2012 07:22:25 IST
0 people liked this

where

Scorching goIITian

Joined: 18 Feb 2012
Posts: 264
3 Apr 2012 14:31:51 IST
0 people liked this

IT SHUD HAV BEEN 6!/3!3!

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
3 Apr 2012 14:36:07 IST
0 people liked this

so it is 6c3

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
3 Apr 2012 14:38:04 IST
0 people liked this

i got it it should be 6c3+6!/4!{2!+2!+1}+6!/5!

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
3 Apr 2012 14:39:28 IST
0 people liked this

i am confused

Scorching goIITian

Joined: 18 Feb 2012
Posts: 264
3 Apr 2012 14:41:50 IST
0 people liked this

SRY I MADE A MISTAKE...U TOOK THE 666660 ARRANGEMENT TWICE

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
3 Apr 2012 15:05:17 IST
0 people liked this

nops

Blazing goIITian

Joined: 21 Mar 2012
Posts: 1457
3 Apr 2012 15:05:50 IST
0 people liked this

pls write the whole solution

Scorching goIITian

Joined: 18 Feb 2012
Posts: 264
3 Apr 2012 21:56:59 IST
0 people liked this

there should be minimum 3 sixes to score 30 runs in an over ..........now if three six are hitted then the total no. of ways are(three four also)=6C3..now if 4 sixes are hitted(remaining 6 runs 4,2 or 6,0 or 3,3)=6C4{2!+2!+1}...now if five six are hitt(remaining 0)=6C5.see ur mistake i hav underlynd it.

Blazing goIITian

Joined: 1 Apr 2012
Posts: 408
5 Apr 2012 09:30:26 IST
0 people liked this

tarun is write

 Some HTML allowed. Keep your comments above the belt or risk having them deleted. Signup for a avatar to have your pictures show up by your comment If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team

## For Quick Info

Name

Mobile

E-mail

City

Class

Vertical Limit

Top Contributors
All Time This Month Last Week
1. Bipin Dubey
 Altitude - 16545 m Post - 7958
2. Himanshu
 Altitude - 10925 m Post - 3836
3. Hari Shankar
 Altitude - 10085 m Post - 2217
4. edison
 Altitude - 10825 m Post - 7804
5. Sagar Saxena
 Altitude - 8635 m Post - 8064
 Altitude - 6330 m Post - 1958

Physics

Topics

Mathematics

Chemistry

Biology

Institutes

Parents Corner

Board

Fun Zone