Question

A bag contains three white marbles, two black marbles, and five red marbles. Find the probability of picking a black marble

Answer 1

Well, there is 10 marbles in total and there is 2 black marbles. So, you get 2/10 but you need to simplify it and then you get 1/5. 

Answer 2

Answer:  0.2

Step-by-step explanation:

Given : The number of black marbles in the bag = 2

The total number of marbles in the bag = $3+2+5=10$

Then , if one marble is drawn from  the bag ,the probability of picking a black marble will be :-

$\text{P(Black)}=\dfrac{\text{Number of black marbles}}{\text{Total marbles}}\\\\\Rightarrow\text{P(Black)}=\dfrac{2}{10}=0.2$

Therefore, the the probability of picking a black marble =0.2