Prime Number Pop Quiz


The year 2013 has just started and while writing a check or holiday cad you may have noticed that 2013 is odd. It ends with 13 that many would rather skip. It contains all the digits in a range of 0-3 with no repetitions, however it is not a number you would call beautiful.  Definitely odd. Perhaps even prime...
Is it prime?
Nope, 2013 is divisible by 11, 3 and 61!
Dare to take a quiz about prime numbers?
If you need some muscle-buildup before the quiz, here is an article about recent prime year 2011 I wrote for The Boston Globe: 2011 is a sexy prime.

Ready for the Quiz?
Here we go:
  • 1.

1.Puzzle #1: Prime Olympics
True or false: Number of rings in the Olympic emblem is prime.  





Answer: True, there are 5 rings and 5 is a rime number.

2.



Puzzle #2: Leap Prime
True or false: Leap year cannot be a prime number year.  






Answer: true, leap year numbers are divisible by 4.


3.

Puzzle #3: Infiltrator
Which of the following four numbers is not a prime: 1, 37, 911, 991. 






Answer: 1 is not prime because prime should have two different divisors: 1 and itself. However, long time ago 1 was considered to be a prime.

4.

Puzzle #4: What are primes?
Which one of the following is a correct definition of a prime number:

  1. Odd number ending with 1, 3, 5, or 7. 
  2. Any number present in the multiplication table. Multiplication table is a “base” of all the numbers. 
  3. Number that can be divided by only two distinct divisors. 
  4. Number that looks the same left-to-right and right-to-left. 






Answer: #3.

5.

Puzzle #5: Prime Flowers.
True or false: Number of petals in any flower is always prime.  








Answer: false. There are 4 petal flowers, 4 is not a prime.

6.

Puzzle #6: Even Primes
True or false: No even number is prime because all even numbers are divisible by 2 in addition to divisors of 1 and itself.  









Answer: this is false because 2 is a prime number. The only even prime. It is divisible by 1 and 2.
7.



Puzzle #7: Math Magic
True or False: This trick can only be done in the prime year such as 2011:  Take the age you were in 2011, add the last two digits of the year you were born and get a number that ends with 11 or 111. 










Answer: This trick will work for any year that ends with 11 such as 1911. And 1911 is not prime: 1911 = 3 x 7 x 7 x 13  Therefore the magic statement is false.
In general, if you add your age to the year you are born you will always get current year. So in 2011 it will end with 11, as well as in 1911 and 3311.

8.



Puzzle #8: Prime Senate.
Number of Democrats in the US Senate is a prime number as well as the number of Republicans in the US Senate.  








Answer: This is true.  There are 47 Democrats and 53 Republicans currently in US Senate.


9.Puzzle #9: Prime 108
True or false:  Famous “Prime 108” restaurant in Nashville, TN located in the Union Station is named after prime number 108 that is the number of entries on their menu. 










Answer: false. 108 is not a prime number (108=54x2). The restaurant is named for a Bully 108, the first steam engine to chug through Union Station, and "prime" alludes to the high-quality ingredients used to compose the dishes.
10.




Puzzle #10 A Special Year.
True or false: Current year is rather special. It is prime in the Gregorian calendar – year 2013; prime in the Islamic calendar – year 1434. And prime in the Hebrew calendar – 5773. 








Answer: false. 2013, 5773 and 1434 are not prime numbers.

This quiz was created by TheMathMom for the Boston Globe in 2011. Link.

56 comments:

  1. Any two odd numbers when subtracted, leaves an even number. For example 33 - 27 (neither of which is primes leaves 6.

    Statement: it is never possible for two primes when subtracted to leave a prime number. True or false?

    There is such a thing as 3 consecutive prime numbers? True or False

    ReplyDelete
    Replies
    1. I want you to thank for your time of this wonderful read!!! I definately enjoy every little bit of it and I have you bookmarked to check out new stuff of your blog a must read blog!!!!
      LED Strip Lights Uk
      LED Tape Uk
      LED Strip Lights UK
      LED GU10
      GU10 LED BULBS
      GU10 LED

      Delete
  2. Check this out, I'll even donate 20% of my net winnings to the Vallejo Unified School District. The only catch is that you've gotta let me write the check. You know, just to make sure it actually gets there and all. Regal Assets

    ReplyDelete
  3. On this site a lot of interesting and useful information. And useful information on this subject you can zanayty here
    http://www.911essay.com/))))))

    ReplyDelete
  4. Great informative site. I'm really impressed after reading this blog post. I really appreciate the time and effort you spend to share this with us!

    ReplyDelete
  5. http://www.burberrysfactory.com/
    http://www.us-handbags.com/
    http://www.official-coachoutlets.com/
    http://www.barbour-factory.com/
    http://www.burberry-outlet2015.com/
    http://www.gucci-factory.com/
    http://www.marcjacobsonsale.com/
    http://www.mcmworldwide.ca/
    http://www.guccishoes-uk.com/
    http://www.kate-spades.com/
    http://www.louisvuittonas.com/
    http://www.lv-guccishoesfactory.com/
    http://www.official-mkoutlets.com/
    http://www.calvin-kleins.com/
    http://www.official-pradaoutlet.com/
    http://www.burberry.eu.com/
    http://www.mkbagsoutlet.in.net/
    http://www.northfaceeoutletonline.com/
    http://www.moncler-clearance.com/
    http://www.the-northfaceclearance.com/
    http://www.clothes-mall.com/
    http://www.polo-outlets.com/
    http://www.ralphlauren.so/
    http://www.ralphlaurentshirts.com/
    http://www.ferragamos.in.net/
    http://www.louisvuitton.so/
    http://www.longchampsoutlet.com/
    http://www.abercrombiee.com/
    http://www.barbour-jacketsoutlet.com/
    http://www.michael--korsonline.com/
    http://www.thenorthface.so/
    http://www.cheapauuggboots.com/
    http://www.coachoutletew.com/
    http://www.tommyhilfiger.in.net/
    http://www.ralphslauren.co.uk/
    http://www.michaelkors.so/
    http://www.oakley.in.net/
    http://www.ausnowbootssale.com/
    http://www.tory-burches.com/
    http://www.woolrich-clearance.com/
    http://www.tommy-hilfigeroutlet.com/
    http://www.auuggbootsoutlet.com/
    http://www.official-thenorthface.com/
    http://www.nike-jordanshoes.com/
    http://www.monsterbeatsbydres.net/
    http://www.canada-gooser.com/
    http://www.bestcustomsonline.com/
    http://coach.co-om.com/
    http://www.coach-blackfriday2014.com/
    http://www.coachccoachoutlet.com/
    http://www.coach-clearance.com/
    http://www.coach-factories.net/
    http://www.louisvuittonsas.com/
    http://www.coachfactoryoutlet.co-om.com/
    http://www.coachoutlet.so/
    http://www.coachoutletrusa.com/
    http://www.coachpursesoutlet.co-om.com/
    http://www.hermes-outletonline.com/
    http://www.misblackfriday.com/
    http://www.co-om.com/
    http://www.mmoncler-outlet.com/
    http://www.newoutletonlinemall.com/
    http://www.ralphlaurenepolo.com/
    http://www.zxcoachoutlet.com/
    http://coachoutlet.eu-us.net/
    http://www.embereso.com/
    http://www.varmoweuts.com/
    http://www.bootiexew.com/
    http://www.mistuesday.com/
    http://www.towednesday.com/
    http://www.clickmichaelkors.com/
    http://michaelkorsoutlet.co-om.com/
    https://twitter.com/MichaelKorsUSA
    http://mcmbackpack.co-om.com/
    https://twitter.com/UggsClearance
    http://monsterbeats.co-om.com/
    https://twitter.com/BurberrySale
    http://northfaceoutlet.co-om.com/
    http://mk.misblackfriday.com/
    http://coachoutlet.misblackfriday.com/
    http://coachfactory.misblackfriday.com/
    http://uggaustralia.misblackfriday.com/
    http://coachpurses.misblackfriday.com/
    http://coachusa.misblackfriday.com/
    http://coach.misblackfriday.com/
    http://michaelkorss.misblackfriday.com/
    http://michaelkors.misblackfriday.com/
    http://airmax.misblackfriday.com/
    http://michael-kors.misblackfriday.com/
    https://twitter.com/CoachOutlet2014
    https://www.facebook.com/coachoutletstoreonline
    https://www.facebook.com/ralphlaurenoutletonline
    https://www.facebook.com/burberryoutlettoryburchoutlet/
    http://www.misblackfriday.com/uggsale.html
    http://www.cheap-christianlouboutinshoes.com/
    http://www.co-om.com/uggboots.html
    http://www.pinterest.com/CircleFashion/
    http://www.misblackfriday.com/superstar.html
    http://www.co-om.com/blackfriday2015.html
    http://www.co-om.com/blackfriday2015.html
    http://www.zxcoachoutlet.com/coachoutletonline.html
    http://www.zxcoachoutlet.com/uggsale.html
    http://www.misblackfriday.com/superstar.html
    http://www.misblackfriday.com/contact_us.html
    http://www.newoutletonlinemall.com/coachoutlet.html

    ReplyDelete
  6. They have to sustain conventional features with improvements of all newest elements needed for the shifting factors and the organization has to be experienced at least of 30+ decades.

    Packers and Movers Hyderabad
    Packers and Movers Mumbai
    Packers and Movers Pune

    ReplyDelete
  7. Relocation solutions are mostly recognized for the purpose of professional usages in locations and thus it has the awesome utilization among town individuals. Professional Relocations are greater than Family members Relocations in figures.

    Packers and Movers Bangalore
    Packers and Movers Chennai
    Packers and Movers Delhi
    Packers and Movers Gurgaon

    ReplyDelete
  8. Thanks for posting good information about relocation services, i appreciate your effort for doing this work. packers and movers in jaipur . movers and packers jaipur

    ReplyDelete
  9. The post was unbelievably amazing. Nice movers’ tips are well written. Thanks a lot for sharing it. packers and movers marathahalli . packers and movers bangalore packers and movers hyderabad

    ReplyDelete
  10. This comment has been removed by the author.

    ReplyDelete
  11. Thanks for Nice and Informative Post. This article is really contains lot more information about This Topic.
    Movers and Packers Bangalore
    Movers and Packers Delhi
    Movers and Packers Gurgaon
    Movers and Packers Pune

    ReplyDelete
  12. Shifting from one place to different could be a terribly sophisticated and effortful task. In suchcases, the movers and packers return to our rescue. they assist in packing, transportation, loading and unloading of the articles. Packers and movers in Gurgaon, city assists plenty of individuals within the shifting of their homes or offices. These folks area unit extremely delicate and take excellent care of their customer’s time and valuable articles.
    Packers and Movers@http://5thpm.in/
    Packers and Movers in Gurgaon@http://5thpm.in/packers-and-movers-gurgaon.html
    Packers and Movers in Delhi@http://5thpm.in/packers-and-movers-delhi.html

    ReplyDelete
  13. Shifting from one place to different could be a terribly sophisticated and effortful task. In suchcases, the movers and packers return to our rescue. they assist in packing, transportation, loading and unloading of the articles. Packers and movers in Gurgaon, city assists plenty of individuals within the shifting of their homes or offices. These folks area unit extremely delicate and take excellent care of their customer’s time and valuable articles.
    Packers and Movers@http://5thpm.in/
    Packers and Movers in Gurgaon@http://5thpm.in/packers-and-movers-gurgaon.html
    Packers and Movers in Delhi@http://5thpm.in/packers-and-movers-delhi.html

    ReplyDelete
  14. Shifting from one place to different could be a terribly sophisticated and effortful task. In suchcases, the movers and packers return to our rescue. they assist in packing, transportation, loading and unloading of the articles. Packers and movers in Gurgaon, city assists plenty of individuals within the shifting of their homes or offices. These folks area unit extremely delicate and take excellent care of their customer’s time and valuable articles.
    Packers and Movers@http://5thpm.in/
    Packers and Movers in Gurgaon@http://5thpm.in/packers-and-movers-gurgaon.html
    Packers and Movers in Delhi@http://5thpm.in/packers-and-movers-delhi.html
    Packers and Movers in Gurgaon
    Packers and Movers in Delhi

    ReplyDelete
  15. Send online rakhi to India @ http://www.sendeliterakhitoindia.com
    Send rakhi to India @ http://www.sendeliterakhitoindia.com/
    Send rakhi gifts to India @ http://www.sendeliterakhitoindia.com/rakhi-gifts.php
    Send rakhi online @ http://www.sendeliterakhitoindia.com/

    ReplyDelete
  16. We work stupendously, round the clock to get the best available services for you. With us, the right solution is always a click away. We are not promoting anyone for no reason, but we work candidly to help our users get the most promising services. There is never a false commitment for anything we claim.

    packers and movers in Jaipur
    packers and movers in Gurgaon
    packers and movers in Indore
    packers and movers in Nashik
    packers and movers in Chandigarh
    packers and movers in Vadodara
    packers and movers in Nagpur

    ReplyDelete
  17. Thanks for sharing such a informative article. I hope that this post is really useful for the people who looks for this.
    Also please check the below links:

    http://www.mayfairservicedapartments.com/
    http://www.visasrus.co.uk/
    http://parklane.co.uk/

    ReplyDelete