5 White Socks and 3 Black socks are in a drawer. I take out two socks. What is the probability the socks are the same colour?

Problem Tackles: Counting Probabilities, Non-replacement probability problems. Keeping track of events
Total number of socks: 5 + 3 = 8Scenarios: Could pick two white socks or two black socksP(Picking two white Socks) = 5/8 * 4/7 = 20/56 . (Number of socks after first pick is 7, number of white socks left is 4)P (Picking two Black socks) = 3/8 *2/7 = 6/56 (same idea as above)P(picking two socks of same colour) = P(Picking two white socks) + P(Picking two black socks) = 6/56 + 20/56 = 26/56

Answered by Bonnor S. Maths tutor

5178 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

If 4x = 9y, and 2x + 5y = 95. What is the value of y^2 - x?


Expand and simplify (x-2)(x-4)


A ball, dropped vertically, falls d metres in t seconds. d is directly proportional to the square of t. The ball drops 45 metres in the first 3 seconds. How far does the ball drop in the next 7 seconds?


How to find the exact formula of the function if the graph of it is given?


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences