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09-07-2008, 06:30 AM
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A box contains 25 slips of paper numbered 1 to 25. What is the probability that one will randomly select a number that is divisible by 3 or 7?
help me anybody.....
I'll be very appresiate you!  |
09-07-2008, 06:51 AM
|  | Flow Master | | Join Date: Dec 2007 Location: Zeitgeist
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Quote:
Originally Posted by busyboy  A box contains 25 slips of paper numbered 1 to 25. What is the probability that one will randomly select a number that is divisible by 3 or 7?
help me anybody.....
I'll be very appresiate you! | Write out all the numbers between 1 and 25 that are divisible by either 3 or 7. Count how many there are. Divide that number by 25. Viola!
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09-07-2008, 11:53 AM
|  | A Cute Angle | | Join Date: Mar 2008 Location: Green and fresh grass
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Quote:
Originally Posted by mr fantastic Viola! | 
Jhevon made the same mistake !
It's voilą 
Viol...means rape ! but don't worry, I would give my consent xD
__________________ Arbeit bringt Brot, Faulenzen Hungersnot.
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09-07-2008, 12:07 PM
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Quote:
Originally Posted by busyboy A box contains 25 slips of paper numbered 1 to 25. What is the probability that one will randomly select a number that is divisible by 3 or 7?
help me anybody.....
I'll be very appresiate you! | A number divisible by 3 is = 3, 6, 9, 12, 15, 18, 21, 24
= total 8 numbers.
A number divisible by 7 is = 7, 14, 21
= total 3 numbers.
Probability that a number divisible by 3 or 7 is   |
09-07-2008, 12:25 PM
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Quote:
Originally Posted by Shyam A number divisible by 3 is = 3, 6, 9, 12, 15, 18, 21, 24
= total 8 numbers.
A number divisible by 7 is = 7, 14, 21
= total 3 numbers. | Shyam, if you are going to simply handout complete solutions at least do them correctly.
Probability that a number divisible by 3 or 7 is  You counted 21 twice. | | The following users thank Plato for this useful post: | |  |
09-07-2008, 04:42 PM
| | Flow Master | | Join Date: Dec 2007 Location: Zeitgeist
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Quote:
Originally Posted by Moo
Jhevon made the same mistake !
It's voilą
Viol...means rape ! but don't worry, I would give my consent xD | The viola is my favourite instrument. I like to hear it sometimes when I post. Hence my deliberate transposition of letters. As for Jhevon, I think he's just lousy at French 
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2. If you always do what you've always done, you'll always get what you've always got.
3. Lack of planning on your part does not constitute an emergency on my part.
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