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Josh has 4 black pens, 3 blue pens, and 2 red pens in his school bag. what is the probability that josh chose two blue pens, if he replaced the first pen back in his pocket before choosing a second pen?

Sagot :

Harutotskiidn

Answer:

[tex] \frac{1}{9} [/tex]

is the probability that Josh two blue pens with replacement

Step-by-step explanation:

4+3+2 = 9 (there are 9 total of pens)

there are 3 blue pens, it would be the numerator while 9 is our denominator, thus the probability that Josh chose blue pen is

[tex] \frac{3}{9} [/tex]

since Josh puts back the first one, the probability of it is the same,

[tex] \frac{3}{9} [/tex]

then multiply the two probability,

[tex] \frac{3}{9} \times \frac{3}{9} [/tex]

3×3=9, 9×9=81

[tex] \frac{9}{81} [/tex]

simplify,

[tex] \frac{1}{9} [/tex]

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