1.
What was the day of the week on 17th June, 1998
Answer: Option 'D'
17th June, 1998 = (1997 years + Period from 1.1.1998 to 17.6.1998)
Odd days in 1600 years = 0
Odd days in 300 years = (5 × 3) = 1
97 years has 24 leap years + 73 ordinary years.
Number of odd days in 97 years = (24 × 2 + 73) = 121 = 2 odd days
Jan Feb March April May June
31 + 28 + 31 + 30 + 31 + 17 = 168 days = 24 weeks = 0 odd day
Total number of odd days = (0 + 1 + 2 + 0) = 3
Given day is Wednesday
2.
Today is Monday, after 61 days, the day will be:
Answer: Option 'B'
Each day of the week is repeated after 7 days.
So, after 63 days, it will be Monday.
After 61 days, it will be saturday.
3.
What was the day of the week on 10th March 1996?
Answer: Option 'A'
(10 + 4 + 96 + 24 + 0)/7 = 134/7 = 1
= Sunday
4.
Answer: Option 'B'
Formula:-(Date + Month code + No.of years + No.of leap year + Century code)/7
= (24 + 0 + 11 + 2 + 6)/7 = 43/7 = 1
= Sunday
5.
It was Sunday on Jan 1, 2006. What was the day of the week Jan 1, 2010?
Answer: Option 'B'
On 31 Dec, 2005 it was Saturday.
Number of Odd days from the year 2006 to the year 2009 = 1 +1+2+1 =5 On 31st Dec 2009 it was Thursday So, 1st Jan 2010 is Friday
6.
What was the day of the week on 26-January-1950?
Answer: Option 'D'
Formula:-(Date + Month code + No.of years + No.of leap year + Century code)/7
= (26 + 1 + 50 + 12 + 0)/7 = 84/7 = 5
= Thursday
7.
It was Thursday on 2nd Jan 1993. What day of the week will be on 15th March 1993?
Answer: Option 'C'
Today number of days = 29(Jan) + 28 (Feb) + (15) Mar = 72 days 10 Weeks + 2 days.
Thus the given date will fall on two days beyond Thursday, that is Saturday.
8.
Which of the following is not a leap year?
Answer: Option 'A'
The century divisible by 400 is a leap year.
The tear 700 is not a leap year
9.
How many days are there in x weeks X days?
Answer: Option 'B'
x weeks x days = (7x + x) days = 8x days
10.
On what dates on April 2001 did Wednesday fall?
Answer: Option 'C'
We shall find the day on 1st April 2001 1st April 2001 = 2000 years + Period from 1.1.2001 to 1.4.2001 Odd days in 1600 years = 0 Odd days in 400 years = 0 Jan, Feb, Mar, April = 31 + 28 + 31 + 1 = 91 days = 0 odd days On 1st April it is Sunday.
In April, 2001 Wednesday falls on 4th , 11th , 18th and 25th .
11.
What was day of the week on 21-September-1987?
Answer: Option 'B'
Formula:-(Date + Month code + No.of years + No.of leap year + Century code)/7
= (21 + 6 + 87 + 21 + 0)/7 = 135/7 = 2
= Monday
12.
Today is Friday, after 126 days, it will be:
Answer: Option 'C'
126/7 = 0
Each day of the week is repeated after 7 days.
So, after 126 days, it will be Friday.
After 126 days, it will be Friday.