Alguna or algunas

Question

He imprimido nuestras fotografías del viaje, ¿quieres ver ________?I have printed the pictures of our trip, do you want to see some?(HINT: Choose the correct singular form.)
I don't understand why alguna is correct here and not algunas. I get that alguna can mean 'the odd one' but this test question doesn't look like the odd one, and it almost exactly matches an example in the quick lesson, where the correct form is given as algunas.

Answer

Hola TomHere, despite talking about photographs in plural, when you ask the question about their interest in seeing them, by saying "¿quieres ver alguna?" using the singular, this means "alguna" as in there is a number of photos to show you so you can see "from 1 to 100", your choice. Obviously, when someone shows you photos you will normally want to see a few, but this "alguna" in singular somehow makes it more open to "you could just see the odd one". We understand it's a difficult concept; this is why in those questions requiring the singular form, we left a hint saying that you needed it in singular. Saludos