Answer:
a
Step-by-step explanation:
Answer:
14/20.
Step.-by-step explanation:
There are 20 socks in the drawer.
The number which are not brown = 9 + 5 = 14.
So the required probability = 14/20.
Answer:
Third option. 
Step-by-step explanation:
For this exercise you need to remember one of the properties for exponents.
There is a property called the "Negative property of exponents" which states the following:
Where 
As you can observe,
is the reciprocal of 
In this case you have the following expression given in the exercise:

Observe the expression. As you can notice, the base "n" has a negative exponent, which is -6.
Therefore, applying the Negative property of exponents explained at the beginning of this explanation, you can simplify the expression.
Then, the simplified form of
is the one shown below:

Answer: A. 1
Step-by-step explanation:
sorry if im wrong