Born in Finland, Turku. At age of 8 moved to eastern Finland, place called Kerimäki (nowadays part of Savonlinna). Went to high-school in city called Joutseno (nowadays part of Lappeenranta).
Right after high school went to local university, spent 6 months in University of Lappeenranta (at the time it was called Lappeenrannan Teknillinen Korkeakoulu aka. LTKK) studying telecommunications. Studies broken by 11 months of Finnish conscript. 6 more months in LTKK and decided to move to University of Helsinki.

Sources:
First-hand information. Entered by Erkka Marjakangas at registration.

I'm also found on My Heritage https://www.myheritage.com/member-2568897_688899701/
Family Tree DNA https://tree.familytreedna.com/?sharedView=d60109fc-c5cc-4f22-9102-...
WikiTree https://www.wikitree.com/wiki/Marjakangas-1
Ancestry https://www.ancestry.com/family-tree/tree/180516369?cfpid=432347662...
FamilySearch https://www.familysearch.org/tree/person/details/L1X9-JQZ
And 23AndMe - but there's no public link