Answer
There are 3 frequencies where resonance is set up in the pipe.
Work Step by Step
We can find the resonant frequencies of the pipe:
$f = \frac{nv}{2L}$, where $n = 1,2,3,...$
$f = \frac{(n)(344~m/s)}{(2)(0.457~m)}$, where $n = 1,2,3,...$
$f = 376~Hz, 753~Hz, 1129~Hz, 1506~Hz, 1881~Hz, 2258~Hz,...$
There are 3 frequencies between $1000~Hz$ and $2000~Hz$ where resonance is set up in the pipe.
