Day arithmetic — If today is Monday, what day is it 64 days from now?

Introduction / Context:
Weekday progression repeats every 7 days. To find the future weekday after N days, reduce N modulo 7 and advance that many steps from the starting day.

Given Data / Assumptions:

• Start day: Monday.
• Advance: 64 days ahead.
• Week cycle length: 7 days.

Concept / Approach:
Compute N mod 7. A remainder r means “advance r weekdays.” If r = 0, the weekday is unchanged. If r = 1, move one day forward, etc.

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer:
Tuesday