1) How many seconds in 1 minute? 2) How many minutes in 1 hour? 3) How many hours in 1 day? 4) How many days in 1 week? 5) How many days in 1 year? 6) How many months in 1 year? 7) How many years in 1 decade? 8) How many years in 1 century? 9) How many minutes in half an hour? 10) How many minutes in a quarter of an hour? 11) How many minutes in three quarters of an hour? 12) How many seconds in 2 minutes? 13) How many days in 48 hours? 14) How many minutes in an hour and a half? 15) How many months in 2 years? 16) How many days in 3 weeks? 17) How many weeks in a month? 18) How many weeks in a fortnight? 19) How many days in a fortnight? 20) How many weeks in 1 year?

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