It was Saturday on January 1, 2005. Find the day of the week on January 1, 2010.
| Question | It was Saturday on January 1, 2005. Find the day of the week on January 1, 2010. | |
| Type | multiple_choice | |
| Option | Tuesday | incorrect |
| Option | Friday | correct |
| Option | Wednesday | incorrect |
| Option | Sunday | incorrect |
| Solution | On December 31, 2004, it was Friday. Number of odd days from the year 2005 to the year 2009 = 1+1+1+2(leap year) +1 = 6 odd days ∴On December 31, 2009, it was Thursday, so on January 1, 2010, it was Friday. | |