Arithmetic aptitude :: Calendar :: General Questions

• Calendar - General Questions

Akhila celebrated her 60th birthday on February 24, 2000. What was the day?

Answer:

Explanation:

February 24th 2000 = (1999 years + Period from 1st January 2000 to 24th February 2000)
Counting of odd days:
1600 years have 0 odd days and 300 years have 1 odd day 99 years

= 24 leap years + 75 ordinary years
= (24x2) + 75 = 48 + 75 = 123 days
= 17 weeks + 4 days = 4 odd days Jan. Feb
31        24        = 55 days = 7 weeks + 5 days = 5 odd days.

Total no. of odd days = 0 + 1+ 4 + 5 = 10 odd days = 3 odd days

February 24th 2000 was Wednesday.

What was the day of the week on 15th August 1947?

Answer:

Explanation:

15th August 1947 =   (1946 years + Period from 1st January 1947 to 15th August 1947)

 Counting of odd days :

1600 years have 0 odd day, 300 years have 1 odd day

47 years =11 leap years + 36 ordinary years = (11x2)+ (36xl) odd days

= 22 + 36 = 58 odd days = 2 odd days

= 227 days = 32 weeks + 3 days = 3 odd days

Total No. of odd days = 0 +1+2 + 3 = 6 odd days

The required day was Saturday.

If Sheela's 1st birthday fell in January 1988, on one of the Mondays, the day on which are was born is

Answer:

Explanation:

Sheela was born on 1987, which is an ordinary year.

.". It has 1 odd day. So the day on which she was born was 1 day beyond the day on January 1988.
.". She was born on Sunday.

• Calendar - General Questions