Which two months in a year have the same calendar?
A. October, December
B. April, November
C. June, October
D. April, July
Answer: Option D
Solution (By Examveda Team)
If the period between the two months is divisible by 7, then that two months will have the same calendar.(a). Oct + Nov = 31 + 30 = 61 (not divisible by 7)
(b). Apr + May + Jun + Jul + Aug + Sep + Oct = 30 + 31 + 30 + 31 + 31 + 30 + 31 = 214 (not divisible by 7)
(c). Jun + July + Aug + Sep = 30 + 31 + 31 + 30 = 122 (not divisible by 7)
(d). Apr + May + June = 30 + 31 + 30 = 91 (divisible by 7)
Hence, April and July months will have the same calendar.

But April have 30 days while july have 31 days so how they have same calendar?