People are just insanely lazy about this. To answer your question follow these steps:
1) record everything you eat every day for a week, and the amounts.
2) calculate the amount of vitamins and minerals in each. If it doesn't say on the box, consult a reputable source.
3) calculate the daily totals and compare them to the recommended daily amount for YOUR caloric needs (NOT the 2000 or 2500 on the label, unless you really eat that little)
4) If there are deficiencies, either modify your diet or consider a vitamin/mineral supplement.
Anyone who finished the second grade can do this, but almost nobody does, they just rely on vagueries like "lots of vitamins in spinach" or "plenty of B vitamins in meat" etc. Is your health not worth a bit of work?