That’s not really something you can calculate the odds on, because the socks in the drawer weren’t chosen from a larger set
Unless you assume that each one had a mate, and you want to know the odds that, when starting from 20 socks, when she picked two socks each day for 10 days she picked half of two pairs. I’m not sure how you calculate those odds, but it’d be very unlikely.
That’s not really something you can calculate the odds on, because the socks in the drawer weren’t chosen from a larger set
Unless you assume that each one had a mate, and you want to know the odds that, when starting from 20 socks, when she picked two socks each day for 10 days she picked half of two pairs. I’m not sure how you calculate those odds, but it’d be very unlikely.