. A bag contains black, grey and spotty beads. A bead is picked at random from this bag without looking. i. Write down the probability of not picking a black bead. ………………………………….. 1 mark ii. Write down the probability of not picking a black bead. ………………………………………….. 1 mark iii. Write down the probability that the bead is black or spotty. …………………………………………… 1 mark
Answers
Given : A bag contains black, grey and spotty beads.
A bead is picked at random from this bag without looking.
To Find : the probability of not picking a black bead.
the probability that the bead is black or spotty.
Solution:
Black = 4
Grey = 2
Spotty = 3
Total = 9
probability of not picking a black bead. = ( Total - Black )/ Total
= ( 9 - 4)/9
= 5/9
probability that the bead is black or spotty. = ( black + spotty ) / (total )
= ( 4 + 3) / 9
= 7/9
Learn More
A bag contains 30 balls numbered 1 to 30. One ball is drawn at ...
brainly.in/question/7339163
An integer n between 1 and 100 find the probability that it is divisible ...
brainly.in/question/7340173
Find the probability of getting 53 Friday in a leap year with proper ...
brainly.in/question/11213163