If 5 November 2019 was Tuesday, then what was the day of the week on 5 November 2021?

Friday

The correct answer is Option (1) → Friday

We are asked: Day of the week on 5 Nov 2021, given 5 Nov 2019 was Tuesday.

Step 1: Count the number of years

From 2019 → 2021 → 2 years

Step 2: Count the extra days

• 2020 is a leap year → 366 days → 52 weeks + 2 days
• 2021 is not a leap year → up to 5 Nov, the day shift is 1 day? Actually we only consider full years:

Better approach:

• From 5 Nov 2019 → 5 Nov 2020: 2020 is a leap year
• Number of days = 366 → 366 mod 7 = 2 extra days
• So 5 Nov 2020 = Tuesday + 2 days = Thursday
• From 5 Nov 2020 → 5 Nov 2021: 365 days → 1 extra day
• 5 Nov 2021 = Thursday + 1 day = Friday