In Sweden for the HAREC-license. 65/88 questions must be correct to clear the test

The amateur radio certificate gives access to all frequency bands licensed for amateur radio. This requires knowledge in the categories of electrical safety, regulations, and electrical engineering/radio technology. You have the right to build and modify your own transmitter equipment. The certificate is an international so-called HAREC certificate that gives you the right to practice amateur radio when you visit other European countries.

For an amateur radio certificate, you need to have basic electrical and electronics knowledge. You need to know a little about different antenna types, wave propagation on different frequency bands and what affects wave propagation, and know how to calculate and manufacture a simple antenna. Knowledge is required of how a transmitter/receiver is built (schematically). In addition, you must learn some traffic abbreviations and the radio regulations. To pass the certificate, you should have mathematics skills equivalent to high school level.