  We report ten fast radio bursts (FRBs) detected in the far side-lobe region
(i.e., $\geq 5^\circ$ off-meridian) of the Canadian Hydrogen Intensity Mapping
Experiment (CHIME) from 2018 August 28 to 2021 August 31. We localize the
bursts by fitting their spectra with a model of the CHIME/FRB synthesized beam
response. CHIME/FRB did not observe repetition of similar brightness from the
uniform sample of 10 side-lobe FRBs in a total exposure time of 35580 hours.
Under the assumption of Poisson-distributed bursts, we infer that the mean
repetition interval above the detecting threshold of the far side-lobe events
is longer than 11880 hours, which is at least 2380 times larger than the
interval from known CHIME/FRB detected repeating sources, with some caveats,
notably that very narrow-band events could have been missed. Our results from
these far side-lobe events suggest one of two scenarios: either (1) all FRBs
repeat and the repetition intervals span a wide range, with high-rate repeaters
being a rare subpopulation, or (2) non-repeating FRBs are a distinct population
different from known repeaters.
