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The year next to 1991 having the same calendar as that of 1990 is:

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That's an interesting question! In a normal year - that is, a year
with no leap day - there are 365 days, which comes to 52 weeks of
7 days, plus one more day.

So if a normal year starts on a Monday, then the following year has to
start on a Tuesday. Does that make sense?

However, if a leap year starts on a Monday, then the following year
has to start on a Wednesday, because of the extra day in February.

And if two years start on the same day, and if they're both normal
years or both leap years, then they have to have the same calendar. Do
you see why this is true?

1990 is a normal year, and in fact, it _does_ start on a Monday. So
1991 must start on a Tuesday, and 1992 must start on a Wednesday. But
1992 is a leap year, so 1993 must start on a Friday (instead of a
Thursday).

I've started a table below:

Year Starts on Leap? Add
---- --------- ----- ---
1990 Monday N 1
1991 Tuesday N 1
1992 Wednesday Y 2
1993 Friday N 1
1994 Saturday N 1

If you continue the table, you'll eventually find a year that starts
on Monday and isn't a leap year. That's the year you're looking for.
a farmer has a rose garden.every day he either plucks 7 or 6 or 24 or 23 roses .the rose plants are intelligent and when the farmers plucks these numbers of roses,the next day 37 or 36 or 9 or 18 new roses bloom in the garden respectively.on monday,he counts 189 roses in the garden. he plucks the roses as per his plan on consecutive days and the new roses bloom as per the intelligence of the plants mentioned above.after some days which of the following can be the number of roses in the garden ?