1)

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


A) Monday

B) Friday

C) Wednesday

D) Saturday

E) Tuesday

Answer:

Option C

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.