Question

The last day of a century cannot be either.
I. Tuesday
II. Thursday
III. Saturday
IV. Sunday

• A. I and II
• B. I and IV
• C. I. II and III
• D. I, III and IV

Answer 1

Answer: (C)

I. II and III

Answer 2

100 years contain 5 odd days.
$⇒$ Last day of 1 century is Friday.
200 years contain (5 x 2) ≡ 3 odd days.
$⇒$ Last day of 2 century is Wednesday.
300 years contain (5 x 3) = 15 ≡ 1 odd day.
$⇒$ Last day of 3 century is Monday.
400 years contain 0 odd day.
This cycle is repeated.
$⇒$ Last day of a century cannot be Tuesday or Thursday or Saturday. So the correct option is (C):