Exact weekday after 84 days — If today is Wednesday, what day will it be after 84 days?

Introduction / Context:
Because 7 divides evenly into many day counts, some questions land on the same weekday after the span. Here we check whether 84 is a multiple of 7 to determine if the weekday repeats exactly.

Given Data / Assumptions:

• Today: Wednesday.
• Advance: 84 days.
• Week repeats every 7 days.

Concept / Approach:
Compute 84 mod 7. If the remainder is 0, the weekday remains unchanged after the span.

Step-by-Step Solution:
84 ÷ 7 = 12 exactly ⇒ remainder 0.Remainder 0 ⇒ same weekday as today.Therefore the day after 84 days is Wednesday.

Verification / Alternative check:
Each full week returns to the same weekday; 12 full weeks later remains Wednesday.

Why Other Options Are Wrong:
Monday, Tuesday, Sunday imply nonzero remainders (−2, −1, or +4), none of which match remainder 0.

Common Pitfalls:
Adding 1 because of inclusive counting; the standard method is remainder arithmetic relative to today.

Final Answer:
Wednesday