Answers>Maths>IB>Article

3 girls and 4 boys are seated randomly on a bench. Find the probability that the girls set together and the boys sit together.

The number off total arrangements is 7!(permutation). The number of ways for which the girls and boys sit togehter is 3!4!2. The probability is the division of the number of way by the total possibilities, which gives 2/35. To make less calculations remmeber the fact that the factorial (!) is equal to the multiplication of every number from the starting point to 1, so 4! = 432*1.

Answered by Lina L. Maths tutor

2017 Views

See similar Maths IB tutors

Related Maths IB answers

All answers ▸

How do radians work? Why can't we just keep working with degrees in school?


What is the limit for this function as x approaches 0? y(x)=(cos x)^(1/sin x)


Solve the equation 8^(x-1) = 6^(3x) . Express your answer in terms of ln 2 and ln3 .


A sequence of numbers have the property that x, 12, y, where x > 0, y > 0, form a geometric sequence while 12, x, 3y form an arithmetic sequence. A)If xy = k, find k. B)Find the value of x and y.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences