Seven people are born in 1962, 1967, 1975, 1982, 1987, 1993 and 1996. R was born in a leap year. When?

Solution: 1996. The only year divisible by 4.

Q is five years older than M. Which pairs of the given years fit?

Solution: Q 1962 and M 1967, or Q 1982 and M 1987.

What are the common traps in Months and dates with constraints questions?

Older = earlier on the time line. Between excludes the two end people. Month boundaries: order dates across months, not by the day number alone.

Start here · the first lesson of Months and dates with constraints

Months and dates with constraints

Scheduling (days/months/time slots) · for IPMAT Indore, IPMAT Rohtak and JIPMAT

The idea

People or events are placed on months, dates or years. It is a row ordered by time, sometimes with two levels (month, then date). Clues give gaps ("two persons born between N and Q"), arithmetic ("five years older") and calendar facts (leap years). No JIPMAT or Rohtak PYQ uses a month-date set; JIPMAT's birthday-range items sit in clocks-calendars. The sets here are PW practice plus originals.

Textbook vs exam method

Textbook method

Write the slots in time order (the given years, or months x dates).
Place the clue that fixes a single slot.
Place the gap and arithmetic clues around it.
Fill the rest and check every clue.

Exam method

Arithmetic shortlist. with years 1962, 1967, 1975, 1982, 1987, 1993, 1996, "five years apart" fits 1962-1967 and 1982-1987 only.
Leap year. among those years only 1996 is a leap year.
Older = earlier. write each "older than" clue as an arrow on the time line.