The D3500 retains precisely the same successful 24.2MP pixel rely because the aged D3400, but this is the more recent sensor, and closer inspection of your specs demonstrates that the whole count on the D3500's sensor stands at 24.78MP, in comparison with 24.72MP within the D3400.  Missed possibilities to make https://www.youtube.com/watch?v=iiKPXhSWK3c