Winnies friend marco guessed that her riddle was about the number 79 Why can't 79 be the answer to Winnies riddle

  1. 👍
  2. 👎
  3. 👁
  1. If you think about this question:

    Winnie wrote the following riddle:
    I am a number between 60 and 100.
    My ones digit is two less than my tens digit.
    I am a prime number.

    Part A
    What number does Winnie’s riddle describe?

    Part B
    Winnie’s friend Marco guessed that her riddle was about the number 79.
    Why can’t 79 be the answer to Winnie’s riddle?


    Part A

    The digit in the tens place must be 6, 7, 8, or 9.

    So the number must be:

    becouse oness digit 4 is two less than tens digit 6

    becouse oness digit 5 is two less than tens digit 7

    becouse oness digit 6 is two less than tens digit 8


    becouse oness digit 7 is two less than tens digit 9

    Since 64 and 86 are even, they are divisible by 2.

    Since 75 has a 5 in the ones place it is divisible by 5.

    So 64, 75, and 86 are not a prime numbers.

    Since the only factors of 97 are 1 and 97, 97 is a prime number.

    Part B

    Although 79 is a prime number between 60 and 100, the ones digit is two more than the tens digit.

    The ones digit should be two less than the tens digit.

    1. 👍
    2. 👎
  2. This helped me with my homework soooo much I'm studying for a test to so thanks for giving an explanation because now I get it and I will know how to do it on the test. Thank you for the help and also do you go to " Hawkins Elementary school" byyyyyyyeeeee. Also just because, HIT OR MISS!!!!!!!!!!!!!!

    1. 👍
    2. 👎
  3. The answers were the right one thank you

    1. 👍
    2. 👎
  4. tanks a lot I was struggling to help my sister o d this problem but you made it easy

    1. 👍
    2. 👎
  5. Oh my gosh, at first I was struggling with this problem and you made it a whole lot easier! Other websites didn't explain it so I'm very glad to see this! Good job and keep up the good work.

    1. 👍
    2. 👎
  6. I still don't get it how do you know the digits in the the tens place has to be 6, 7, 8, 9, ?

    1. 👍
    2. 👎
  7. I am trying to do a test!

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Social Studies

    Which effect did Marco Polo’s The Travels of Marco Polo have on East Asia and Southeast Asia?

  2. world history

    What impact did the Silk Road have on Marco Polo’s expeditions to the Mongolian Empire? Marco Polo traveled the Silk Road to reach Mongolia but the path was too treacherous and led to Polo’s death. Macro Polo used the Silk

  3. riddles

    what do you call the golden gate bridge at put this riddle on the Riddle section.

  4. English

    Identify the sentence that is correctly punctuated. A. Clara did not study very much for her biology test, therefore, she guessed at many of the answers. B. Clara did not study very much for her biology test; therefore she guessed

  1. mathamatics

    You and your friend are selling magazine subscriptions for a fundraiser. After w weeks, you have sold (7w+6) subscriptions and your friend has sold (9w+2) subscriptions. a. Write an expression in simplest form that represents the

  2. english

    Solve this riddle :- my first letter is in chocolate but not in gram. My second letter is in cake and also in jam. My third letter in time table is easily found. My whole name is a friend who's often around. What am I?

  3. english

    rewrite the following sentences : Marco polo made many discoveries.The discoveries were amazing. Begin with:Marco polo........... She will win the prize.she has worked hard use :since..... They could hardly see the was very

  4. Math

    Can anyone help with this question? Your backpack contains 2010 chocolate bars, which you are going to divide between your best friend and yourself. You think you are a nice person, so you will give your best friend more than zero

  1. Physics

    In a physics study group, a friend says in a profound tone that light is the only thing we can see. After a few laughs, your friend goes on to say that light is produced by the connection between electricity and magnetism. Is your

  2. math (combination)

    A woman has 11 close Friend. Find the number of ways she can invite 5 of them to dinner if a. but where 2 of the friends are married and will not attend separately b. where 2 of the friend will not attend together the answer to a.

  3. Math

    Winnie write the following riddle.I am a number between 60 and 100.My ones digit is two less than my tens digit.I am a prime number.Winnie's friend Marci guessed that her riddle was about the number 79.Why can't 79 be the answer

  4. History

    Which most accurately reflects occurrences during the Qin dynasty? A. Genghis Khan conquered China, began building the Silk Road to connect China and India, and developed the first Chinese written language. B. Emperor Gaozu

You can view more similar questions or ask a new question.