. There are 13 girls and 15 boys in a line. If onestudent is chosen at

1.	. There are 13 girls and 15 boys in a line. If onestudent is chosen at random, then find theprobability that he is a boy
Answer» Hi , _____________________________________________________________ The theoretical ( classical ) probability of an event E , written as P(E), its define as P(E) = ( Number of outcomes favorable to E) / ( Number of all possible outcomes of the experiment ) According to the problem , Number of girls in the line = 13 Number of boys in the line = 15 Total possible out comes = Number of girls + Number of boys = 13 + 15 = 28 -------( 1 ) The number of outcomes favorable for one student is chosen at random that probability that he is a boy = 15 ---------( 2 ) P ( boy ) = ( 2 ) / ( 1 ) = 15 /28

. There are 13 girls and 15 boys in a line. If onestudent is chosen at random, then find theprobability that he is a boy

Answer»

Hi ,

_____________________________________________________________

The theoretical ( classical ) probability of an event E , written as P(E),

its define as

P(E) = ( Number of outcomes favorable to E) / ( Number of all possible outcomes of the experiment )

According to the problem ,

Number of girls in the line = 13

Number of boys in the line = 15

Total possible out comes = Number of girls + Number of boys

= 13 + 15

= 28 -------( 1 )

The number of outcomes favorable for one student is chosen at

random that probability that he is a boy = 15 ---------( 2 )

P ( boy ) = ( 2 ) / ( 1 )

= 15 /28