Who is the author of the book “ Nuclearization of

If the sixth day of a month is four days before Monday, then which day will be the eighteenth day of month?

Which two months in a year have the same calendar?

If 10^th of the month falls on the day preceding Sunday, on what day will 1^st of the month fall?

At 9:45 in a clock, the angle between the minute and hour hands is:

At what time between 3:30 and 4 will hands of a clock be at the right angles?

In a factory all Tuesdays and Saturdays are offs. If a month starts with a Tuesday and has 31 days then how many offs will be there in that month?

If December 25^th, which is Christmas Day, falls on a Tuesday, what day of the week will it be after five days?