Mintu’s birthday is on Wednesday, 8th May. On what day of the week will Anku’s…

Concept: To find the day of the week after a certain gap of days from a known date, calculate the “odd days” — the day-gap between the two dates taken modulo 7. Since every complete week (7 days) returns to the same weekday, the target date's weekday is the reference weekday advanced by that many odd days.

Application: Mintu's birthday, 8th May, is a Wednesday. We need the weekday of Anku's birthday, 10th August, in the same year.

1. Remaining days in May after the 8th: 31 − 8 = 23.

2. Full days in June: 30.

3. Full days in July: 31.

4. Days up to and including 10th August: 10.

5. Total day-gap = 23 + 30 + 31 + 10 = 94 days.

6. Odd days = 94 ÷ 7 = 13 weeks, remainder 3 → 3 odd days.

7. Advancing 3 days from Wednesday: Thursday (1) → Friday (2) → Saturday (3).

Cross-check: 91 days (exactly 13 weeks, since 23 + 30 + 31 + 7 = 91) after 8th May is 7th August, which must fall on the same weekday, Wednesday, because 91 is exactly divisible by 7. Three days after that Wednesday — 10th August — is Saturday, confirming the result.

Hence, Anku's birthday falls on Saturday.