It was Monday on November 12, 2018. What will be the day on

Solution

Number of odd days in normal year is ‘1’ and number of odd days in leap year are ‘2’.
There are 7 normal years (2019, 2021, 2022, 2023, 2025, 2026 and 2027) and 3 leap years (2020, 2024 and 2028) from November 12, 2022 to November 12, 2028 So, number of odd days will be
From November 12, 2018 to November 11, 2019: 1
From November 12, 2019 to November 11, 2020: 2
From November 12, 2020 to November 11, 2021: 1
From November 12, 2021 to November 11, 2022: 1
From November 12, 2022 to November 11, 2023: 1
From November 12, 2023 to November 11, 2024: 2
From November 12, 2024 to November 11, 2025: 1
From November 12, 2025 to November 11, 2026: 1
From November 12, 2026 to November 11, 2027: 1
From November 12, 2027 to November 11, 2028: 2
So, total number of odd days is ‘13’. So, there are 6 odd days. So, it will be Sunday on November 12, 2028