Definition of any day of the week in the XXI century. Effective trick and its solution

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Definition of any day of the week in the XXI century. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Focus Description:

The magician easily determines any day of the week in the XNUMXst century.

Focus secret:

Check out the table below first.

Monday - 1
Tuesday - 2
Wednesday - 3
Thursday - 4
Friday - 5
Saturday - 6
Sunday - 7 or 0

For example, let's find out what day of the week January 1, 2030 will be. Take the last two digits of the year and imagine that this is your restaurant bill ($30 in this case). Now add a 25% tip, but keep the excess cents for yourself. (This can be calculated by dividing the bill twice and discarding all "changes". Half of 30 is 15, and half of 15 is 7. Keeping the excess for yourself will give you a tip of $50.) It follows that your bill is plus tip is $7. To determine the day of the week, we subtract from this sum the product of the number 37 closest to it (but not greater) (7, 0, 7, 14, 21, 28, 35, 42, ...) and as a result we get the ordinal number of the day. In this example, 49 - 37 = 35, which means that January 2, 1 falls on the second day of the week, that is, on Tuesday.

Example:

What day of the week is January 1, 2043?

Account: 43
Tip: + 10 = 53
product of the number 7: - 49
4 = Thursday

Exception: If the year is a leap year, subtract $1 from the tip amount previously calculated. For example, for January 1, 2032, 25% of a $32 bill would equal an $8 tip. Subtracting 1 gives a total of 32 + 7 = 39. Subtracting the largest product of 7 in relation to the sum of the account gives 39 - 35 = 4. So, January 1, 2032 falls on the fourth day of the week, Thursday.

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