Question

in a school there are two section of class 8 having 32 and 28 students and other school B has three sections of class eight with number of students 20, 25 and 35 find the probability that the topper of class 8 is from school B. which school has a better chance to have but topper​

Answer 1

Step-by-step explanation:

total number of student= 32+28+20+25+35= 140

probability of choosing B  = 1/2

the probability that the topper of class 8 is from school B

= 1/2×number of student in school B of Class 8/Total no. of student

= 1/2(80/140) = 2/7

Now, the probability that the topper of class 8 is from school A

= 1/2×number of student in school A of Class 8/Total no. of student

= 1/2×60/140

= 3/14

Clearly, school B has a better chance of producing Topper.

Answer 2

Answer:

4/7 & School B

Step-by-step explanation:

Total no. of students in class 8=32+28+20+25+35

=140 students

No of students in school B=20+25+35=80

Probability=No.of students in school B/Total no. of students in class 8

=80/140

=4/7 .....Ans....

Probability of school A=No. of students in school A/Total no. of students in class 8

=60/140

=3/7

4/7>3/7

So School B has a better chance to have a topper...

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