10 Questions

Questions and Answers

- 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.What's the "scientific American About"?
- A.
It's a math competition held every 2 years.

- B.
It's a TV game show

- C.
It's a radio show

- 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