Question : Directions: If 11th August 1918 is Sunday, then what will be the day of the week on 4th December 1925?
Option 1: Saturday
Option 2: Tuesday
Option 3: Monday
Option 4: Friday
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Correct Answer: Friday
Solution :
Given:
11th August 1918 is Sunday.
Calculate the days between
11th August 1918
, and
4th December 1925.
Number of remaining days in 1918→
Aug = 31 – 11= 20; Sep = 30; Oct = 31; Nov = 30; Dec = 31
⇒ 20 + 30 + 31 + 30 + 31 = 142
From
1919 to 1924
→
(6 × 365) + 2 = 2190 + 2 = 2192 (2 days are added as 1920 and 1924 are leap years.)
From 1st Jan 1925 to 4th Dec 1925
→
Jan = 31; Feb = 28; Mar = 31; Apr = 30; May = 31; June = 30; July = 31; Aug = 31; Sept = 30; Oct = 31; Nov = 30; Dec = 4
⇒ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 4 = 338
Total number of days = 142 + 2192 + 338 = 2672 days
On dividing 2672 by 7, we get 5 as the remainder. So, add five days to Sunday, it will be Friday.
So, 4th December 1925 will be Friday. Hence, the fourth option is correct.
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