Qualification > Math

S1 and S2 DOUBTS HERE!!!!

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astarmathsandphysics:
1a.4/6*3/5=12/30=2/5
b.2/6*1/5=1/15

2.11! cos each player is an individual and they can be told apart.
The captain can sit on the front in one of five places and the others can arrange themselves in 10! ways so5*10!

~ Miss Relina ~:

--- Quote from: astarmathsandphysics on December 07, 2011, 05:52:12 pm ---1a.4/6*3/5=12/30=2/5
b.2/6*1/5=1/15

2.11! cos each player is an individual and they can be told apart.
The captain can sit on the front in one of five places and the others can arrange themselves in 10! ways so5*10!

--- End quote ---

Sir why how did you find the first answer ??? why did you mulitply 4/6 * 3/5 ...???

astarmathsandphysics:
cos there are four non 'o' letters out of 6 so prob of not picking o is 4/6
when this letter is picked, there are three non 'o' letters out of five, so prob of picking non 'o' letter is 3/5
then 4/6*3/5

astarmathsandphysics:
theeducationchannel.info is working now. You can also ask for a 'video solution'

~ Miss Relina ~:

--- Quote from: astarmathsandphysics on December 08, 2011, 10:57:01 am ---cos there are four non 'o' letters out of 6 so prob of not picking o is 4/6
when this letter is picked, there are three non 'o' letters out of five, so prob of picking non 'o' letter is 3/5
then 4/6*3/5

--- End quote ---

but that's with assuming that the number is not replaced ......right ??? ok if that's the case then it might me 4/6*3/5*2/4 as he picked three numbers right ???

Thanks for the link I'll try it  ;)

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