Math, asked by shadowvu7, 3 months ago

. 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

Answered by Vansh89278
0
50% probablity of picking the black spots
Answered by amitnrw
2

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

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