Question

class 8 has 24 boys and 12 girls .a student is choosen at random probability of selecting girl student​

Answer 1

Answer:

there is 33.33% chances that a girl will be chosen.

Answer 2

Number of ways of selecting 2 students from 30 students = 30C2 ways

= ( 30 x 29 )/2

= 15 x 29 ways

Number of ways of selecting 2 girls from 12 girls = 12C2 ways

= 12 x 11 / 2

= 6 x 11

Thus, probability that both selected students are girls

= ( 6 x 11 ) / ( 15 x 29 )

= 22 / 145