What percentage of the time will a variable that has a t distribution with the specified degrees

Question:

What percentage of the time will a variable that has a t with the specified degrees of freedom fall in the indicated region?
a. 10 df, between –2.23 and 2.23
b. 24 df, between –2.80 and 2.80
c. 24 df, to the right of 2.80
Distribution
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