Ajar contains ten black buttons and six brown buttons. if 9 buttons are picked at random, what is the probability that exactly five of them are black?

Step-by-step explanation:

It is given that A jar contains ten black buttons and six Brown buttons.

Therefore, total number of buttons= 16.

Then, the probability of getting black button will be= and the probability of getting brown button=.

It is given that 9 buttons are picked at random and We have to find he probability that exactly five of them are black. Since, it is the case of the random variables, therefore the  probability that exactly five of them are black=

=

=

Thus,probability that exactly five of them are black=.

hope it

step-by-step explanation:

x^(1/6) · x^(1/6) · x^(1/6)   ·x^(1/6) = x^(4/6)   since we add the exponents

4/6 can be simplified to 2/3

the simplified form is x^(2/3)

1/4 because there is 4 grades.