warikiru

Godan Verb (ru)

1. to find a clear solution; to come to a clean decision; to give a clear explanation; to reason out; to conclude; to be pragmatic; to be practical

Transitive
Godan Verb (ru)

2. to divide exactly (without remainder); to divide evenly

Transitive
きゅうれい約数やくすうのうち、9きゅうでわりれないかずなんあるでしょうか。
kyūjūno yakusūno uchi kyūde warikirenai kazuwa nanko arudeshōka.
Among the divisors of 90, how many numbers are not divisible by 9?
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