Listen to @augustlan. You need know what is in the supplements. Sure taking 1 of each is probably fine, but if there is completely different vitamins and minerals in the supplements you probably could take two of each. But, you really need to find out what is ok dosages and not just pop a pill in the first place. Educate yourself. For instance a daily supplement with iron might be too much iron for a man, it is important for men to take multivitamins specifically made for men which typically only have 0 to 6 mg of iron, while for menstruating women it is typically 18 mg. Too much A is not recommended for women who can become pregnant. A, D, E, and K are fat soluble vitamins, which means it is easier to overdose. Although, it seems many Americans are lacking in all of those.
If the percentages recommended by the RDA on the label are all less than or equal to 100% I think there is no problem, because those numbers are very conservative. If any are mega doses be careful, unless you have had blood tests to see if you need those hight doses. Even the water soluble vitamins like B and C can build in your system at high doses, because they take time to flush out. There are some studies suggesting this is not good. My neighbor had a crazy high number for her b12 because she was getting shots, and thought it was impossible to get too much.