Question Set

1. In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:





Ask Your Doubts Here

Type in
(Press Ctrl+g to toggle between English and the chosen language)

Comments

  • By: guest on 01 Jun 2017 05.47 pm
    Let S be the sample space and E be the event of selecting 1 girl and 2 boys. Then, n(S) = Number ways of selecting 3 students out of 25 = 25C3 ` = (25 x 24 x 23) (3 x 2 x 1) = 2300. n(E) = (10C1 x 15C2) = 10 x (15 x 14) (2 x 1) = 1050. P(E) = n(E) = 1050 = 21 . n(S) 2300 46
Show Similar Question And Answers
QA->The region of space around the nucleus where there is a high probability of finding an electron is called?....
QA->Improve enrolment and retention of girl children in Schools & raise the age at marriage of girls are the main objectives of?....
QA->Apupil who looks after the boys in the class in the absence of the teacher....
QA->On which day National Girl Child Day is celebrated every year as a national observance day for the girl child?....
QA->A beautiful girl is always ______ of other girl’s beauty.....
MCQ->In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:....
MCQ->In a class there are 15 boys and 10 girls.Three students are selected at random.The probability that 1 girl and 2 boys are selected is....
MCQ->In a class of 60 students, the number of boys and girls participating in the annual sports is in the ratio 3 : 2 respectively. The number of girls not participating in the sports is 5 more than the number of boys not participating in the sports. If the number of boys participating in the sports is 15, then how many girls are there in the class ?....
MCQ->what is the total number of students (male and Female) in the class? I. the average weight of the students of the class is 61.08 kg. the average weight of male students is 63 kg and the average weight of the female students is 59 kg. The difference between number of male students and number of female students is 3. II. The respective ratio of number of male students and number of female students in the class is 13:12.....
MCQ->In a class, there are 18 boys who are over 160 cm tall. If these constitute three-fourths of the boys and the total number of boys is two-thirds of the total number of students in the class, what is the number of girls in the class ?....
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use | Powered By:Omega Web Solutions
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions