Find $x$ for random variable with 15 degrees of freedom

Question

I have a question stating:

If $X$ is a chi-square random variable with 15 degrees of freedom, find the value of $x$ such that $P(X >= x) = 0.05$.

The answer in the book is $0.05$. I am confused why the variable $x$ would be equal to $0.05$ in the statement $P(X >= x) = 0.05$ rather than being equal to a value from a chi-square table for $\chi^2$_{15, 0.05}

Answer 1

According to R, the value of $x$ is 24.99579.

> qchisq(0.95,15)
[1] 24.99579