Abag contains 19 white balls and 6 black balls. the balls are drawn with replacement. what is the expected number of white balls drawn before the 13 th black ball is drawn.

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

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