A bag has marbles of different colours. At random, the probability of picking a red marble is 0.57 and the probability of picking a yellow marble is 0.07. Find the probability of not picking both a yellow and a red marble.
Answers
there is a formula ,
red marble = 0.57
yellow marble =0.07
probability in total=0.64
1-0.64= 0.36
so, the probability of getting neither red nor yellow =0.36
Given:
Red marbles = 4
Yellow marbles = 8
To Find:
Probability of
a) picking a yellow marble.
b) picking a red marble.
c) picking a blue marble.
Formula:
Since we have 4 red marbles and 8 yellow marbles, to find the probability we have to divide the number of marbles in the question asked and the total number of marbles.
Solution:
a) Probability of picking a yellow marble:
No. of yellow marbles = 8
Total no. of marbles = 12
Let's find the probability:
8/12
4/6
2/3
b) Probability of picking a red marble:
No. of red marbles = 4
Total no. of marbles = 12
Let's find the probability:
4/12
2/6
1/3
c) Probability of picking a blue marble:
No. of blue marbles = 0
Total no. of marbles = 12
Let's find the probability:
0/12
Hence,
Probability of picking a yellow marble is 2/3
Probability of picking a red marble is 1/3
Probability of picking a blue marble is 0/12