sophielouise2704 sophielouise2704

03-04-2020
Mathematics

contestada

A bag contains 12 discs

7 are red

3 are blue

2 are yellow

Two discs are taken from the bag at random, without replacement. Work out the probability that the two discs are the same colour. Please help :)

Respuesta :

sminnite sminnite

03-04-2020

Answer:

If they are both red, 7/22

If both blue, 1/22

Yellow, 1/66

Step-by-step explanation:

7/12 times 6/11 (both decrease by one because there is no replacement)

3/12 times 2/11

2/12 times 1/11

Answer Link

Otras preguntas

What type of shoes are BEST for an art museum visit? A. narrow-toed shoes B. platform shoes C. sneakers D. stiletto heels

Hooking the Audience 1. briefly mentioning the reasons that support the claim 2. providing an interesting fact 3. asking a thoughtful question 4. making the cla

the preindustrial age for western civilization lasted from the start of recorded history to about the?

An equilateral triangle has sides 10 cm in length. Calculate the perpendicular height of the triangle. (to nearest mm) Help please

n the kitchen cupboard, there are three jars containing different items. sugar is to the right of rice and the flour is to the right of the sugar. which one is

A lounge chair manufacturing company's daily production costs, (y), is dependent on the number of lounge chairs (x) produced daily. Use the graph below to answe

solve the system of equations using elimination: -3x+3y=9 and 8x-6y=-4

Hooking the Audience 1. briefly mentioning the reasons that support the claim 2. providing an interesting fact 3. asking a thoughtful question 4. making the cla

Justin is walking around an area that has few trees and many tall grasses. In which biome is Justin most likely walking? A deciduous forest B grassland C desert

Which literary device is used in this poem?