#### Answer

1:1

#### Work Step by Step

The odds in favor of E are found by taking the probability that E will occur
and dividing by the probability that E will not occur.
Odds in Favor = $\frac{P(E)}{P(not E)}$
The odds in favor of drawing a black card are:
E: {26 cards that are black}
P(E) = $\frac{26}{52}$ = $\frac{1}{2}$
P(not E) = 1 - P(E)
= 1 - $\frac{1}{2}$
=$\frac{2-1}{2}$ = $\frac{1}{2}$
Odds in Favor = $\frac{\frac{1}{2}}{\frac{1}{2}}$ = $\frac{1}{1}$