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Tiles numbered 1 through 25 are placed in a bag. If one tile is removed at random, what...
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9 of those 25 numbers are prime so there is a 36% picking a prime number
Posted by bergcar on January 7, 2012 at 10:07 AM (Answer #1)
Tiles numbered 1 through 25 are placed in a bag. The prime numbers among these are 2, 3, 5, 7, 11, 13, 17, 19, 23. The total number of tiles is 25.
The probability of a particular event is the number of favorable ways in which the event can occur divided by the total number of ways in which an event can occur.
Probability of the number on the tile being a prime is `9/25 = (900/25)% = 36%`
The required probability is 36%.
Posted by justaguide on January 7, 2012 at 1:54 PM (Answer #2)
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