3 ms·
The sum of the digits of which equals 30.
by Exoristos 2y ago
The sum of the digits of which equals 30.
- thaumasiotes 2y agoAre you sure you don't mean "The digits of which sum to 30"? There being one legal way to say something isn't evidence that other ways are illegal. It remains the case that whose bears the same relation to which that it does to who.