# What Do You Know About Amazing Calendar Trick

10 Questions | Total Attempts: 107  Settings  If you want to entertain your friends and look smart at the same time, the magic calendar trick is one of the best options to choose. You will have to think fast, and, most of all, you'll have to have a little bit of knowledge about math. So, are you interested in playing the magician? If yes, complete our quiz now.

• 1.
What's the first rule of the calendar trick?
• A.

To have someone circle a group of any numbers.

• B.

To have someone circle a group of 9 numbers.

• C.

To have someone circle a group of 3 numbers.

• D.

To have someone circle a group of 6 numbers.

• 2.
What's the trick behind the magic calendar?
• A.

It's to multiply the number in the center of the circled numbers by 3.

• B.

It's to multiply the number in the center of the circled numbers by 10.

• C.

It's to multiply the number in the center of the circled numbers by 9.

• D.

It's to multiply the number in the center of the circled numbers by 5.

• 3.
How can one multiply by 9 quickly?
• A.

By multiplying by 10 then subtracting the number.

• B.

By multiplying by 100 then subtracting the number.

• C.

By multiplying by 20 then subtracting the number.

• D.

By multiplying by 2 then subtracting the number.

• 4.
What's the trick if your friend has to circle 20 numbers in a 5 by 4 rectangle?
• A.

To add the smallest and largest numbers that are circled and multiply their by 5.

• B.

To add the smallest and largest numbers that are circled and multiply their by 10.

• C.

To add the smallest and largest numbers that are circled and multiply their by 1.

• D.

To add the smallest and largest numbers that are circled and multiply their by 100.

• 5.
What's the Zeller formula?
• A.

D = k+ [(13 m-1)/5] +D [D/4] + [C/4] -2 C

• B.

D = k+ [(13 m-1)/5] +D [D/4] + [C/4] -2 C mod 3

• C.

D = k+ [(13 m-1)/5] +D [D/4] + [C/4] -2 C mod 7

• D.

D = k+ [(13 m-1)/5] +D [D/4] + [C/4] -2 mod 7

• 6.
What's a two-cube calendar?
• A.

It's a desk calendar consisting of 2 cubes with faces marked by digits 0 through 9.

• B.

It's a desk calendar consisting of 2 cubes with faces marked by digits 0 through 6.

• C.

It's a desk calendar consisting of 2 cubes with faces marked by digits 1 through 9.

• D.

It's a desk calendar consisting of 2 cubes with faces marked by digits 3 through 9.

• 7.
• A.

It's a math competition held every 2 years.

• B.

It's a TV game show

• C.

• D.

It's an American popular science magazine

• 8.
What's a Sicherman dice?
• A.

They are the only pair of 4-sided dice that are not normal dice bear only positive integers.

• B.

They are the only pair of 8-sided dice that are not normal dice bear only positive integers.

• C.

They are the only pair of 6-sided dice that are not normal dice bear only positive integers.

• D.

They are the only pair of 10-sided dice that are not normal dice bear only positive integers.

• 9.
What is the other term for Arabic numerals?
• A.

Hindu-Arabic numerals

• B.

Normal digits

• C.

Integers

• D.

Rounded numbers

• 10.
What's the other activity that resembles the magic calendar?
• A.

The magic square

• B.

Soduko

• C.

Crosswords

• D.

A Chess game

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