When were 50 over ODI matches introduced?

Keep practicing — related questions

• When were ODI's introduced?
• First ODI matches began in:
• In which year were the World Cup matches reduced to 50 overs from the previous 60 overs?
• When were the no. of overs reduced from 60 to 50 per innings?
• In which year was the first ODI played?
• When was the first cricket ODI played?
• When was the first ODI played in the history of cricket?
• First ODI was played in the year