While writing the date 6/15/90 (June 15, 1990), James noticed that the month (6) times the day (15) equaled the year (90).

There are four other dates in 1990 that fit this equation. Find and list them.

What do Bastille Day and Christmas ever in any yeah have in common? How many dates fit this pattern?

Bastille Day is always July 14. Christmas is always December 25.

Can you think of other dates that are always on the same day and month?

christmas eve is always on december 25

9/10/90
10/9/90 those are the only ones i can think

Christmas Eve is December 24

What about New Years Day? Independence Day? Valentine's Day? Flag Day? Halloween? April Fool's Day?

ohhh yea that's what i ment sorry about that and thanks for the rest

umm now that u made me think i have 9/10/90

3/30/90
5/18/90 but i nedd one more and i cnt think of one

As an aside, I wonder how many Americans know that there are several ways to write dates

I know the American way is to write
03/04/2011 or March 4th, 2011

However in Canada and other countries we write it as
04/03/2011 for March 4th 2011, in ascending units of time.
The more standard way , according to ISO, responsible for metric units, the proper way would be
2011-03-04 , in descending units of time which would allow for addition of smaller units such as hours, minutes, and seconds

Just thought I would throw in my 2 bits of trivial here.

To find the four other dates in 1990 that fit the equation where the month times the day equals the year, we can follow these steps:

1. Start by listing all the possible dates in 1990.
- January: 1-31
- February: 1-28
- March: 1-31
- April: 1-30
- May: 1-31
- June: 1-30
- July: 1-31
- August: 1-31
- September: 1-30
- October: 1-31
- November: 1-30
- December: 1-31

2. For each date, calculate the product of the month and the day.
- For example, for June 1, the product would be 6 * 1 = 6.

3. Compare the calculated product with the year of that date.

4. If the product equals the year, add the date to the list.

Using this method, we can find the four other dates in 1990 that fit the equation. Here they are:

1. January 1, 1990: 1 * 1 = 1
2. February 2, 1990: 2 * 2 = 4
3. March 3, 1990: 3 * 3 = 9
4. April 2, 1990: 4 * 2 = 8

Now, moving on to the second question about Bastille Day and Christmas. Bastille Day is celebrated on July 14th and Christmas is celebrated on December 25th every year. To find out what they have in common, we will compare the two dates:

1. Bastille Day: July 14
2. Christmas: December 25

Both dates have the same month (July and December) and day (14 and 25) but different years. So, they have the same day and month but occur in different years.

As for the number of dates that fit this pattern, we have identified one instance (Bastille Day and Christmas). However, this pattern occurs multiple times since there are other holidays and events that fall on the same day and month every year.