Can you have a capital one quicksilver and platinum card

No, Capital One does not allow card combining anymore, and there is no certainty that this feature will return in the future. If it does, you might be able to find it under the "I Want To" menu in your online account, according to Capital One representatives.

Capital One Quicksilver is better than Capital One Platinum in just about every way. It offers rewards, a welcome bonus, redemption options, intro APR offers, and additional perks such as access to Capital One Entertainment and World Elite Mastercard benefits.

The Capital One Platinum maximum credit limit can be as high as $3,000 according to online cardholder reports, but it will depend entirely on the specifics of each applicant's credit and their overall financial situation. Most cardholders get credit limits of at least $300, though.

Generally, you can only own two Capital One credit cards. Because of this limitation, it's important you only apply for the Capital One cards you really want.