Calendar - Study Mode

[#1] What was the day of the week on 26-January-1950?
Correct Answer

(C) Thursday

Explanation

Solution: Formula : (Date + Month code + No.of years + No.of leap year + Century code)/7 $$eqalign{
& = frac{{26 + 1 + 50 + 12 + 0}}{7} cr
& = frac{{89}}{7} cr
& = 5 cr
& = { ext{Thursday}} cr} $$

[#2] Today is Thursday. What day of the week it was 30 days?
Correct Answer

(C) Tuesday

Explanation

Solution: 30 days = 4 x 7 + 2 = 2 odd days The day is 2 days before Thursday i.e Tuesday

[#3] 01-Jan-2007 was Monday. What day of the week lies on 01-Jan-2008?
Correct Answer

(B) Tuesday

Explanation

Solution: Given that January 1, 2007 was Monday. Odd days in 2007 = 1 (we have taken the complete year 2007 because we need to find out the odd days from 01-Jan-2007 to 31-Dec-2007, that is the whole year 2007) Hence January 1, 2008 = (Monday + 1 Odd day) = Tuesday

[#4] 1.12.91 is the first Sunday. Which is the fourth Tuesday of December 91?
Correct Answer

(C) 24.12.91

Explanation

Solution: Given that 1.12.91 is the first Sunday Hence we can assume that 3.12.91 is the first Tuesday If we add 7 days to 3.12.91, we will get second Tuesday If we add 14 days to 3.12.91, we will get third Tuesday If we add 21 days to 3.12.91, we will get fourth Tuesday ⇒ Fourth Tuesday = (3.12.91 + 21 days) = 24.12.91

[#5] Today is Thursday. The day after 59 days will be?
Correct Answer

(A) Sunday

Explanation

Solution: 59 days = 8 weeks 3 days = 3 odd days Hence if today is Thursday, After 59 days, it will be = (Thursday + 3 odd days) = Sunday