Winnies friend marco guessed that her riddle was about the number 79 Why can't 79 be the answer to Winnies riddle
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?
Explain.
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?
Explain.
Then:
Part A
The digit in the tens place must be 6, 7, 8, or 9.
So the number must be:
64
becouse oness digit 4 is two less than tens digit 6
75
becouse oness digit 5 is two less than tens digit 7
86
becouse oness digit 6 is two less than tens digit 8
and
97
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.
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!!!!!!!!!!!!!!
tanks a lot I was struggling to help my sister o d this problem but you made it easy
The answers were the right one thank you
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.
I still don't get it how do you know the digits in the the tens place has to be 6, 7, 8, 9, ?
I am trying to do a test!
It wasn't the right answer sadly 😕 :[
To determine why 79 cannot be the answer to Winnie's riddle, we need to know the specifics of the riddle itself. However, based on the information given, we can speculate as to why 79 might be an incorrect answer.
There could be several reasons why 79 might not be the correct answer to Winnie's riddle:
1. The riddle might be about a different number: If Winnie's riddle is specifically asking for a different number or involves a different concept altogether, then any number, including 79, would be incorrect.
2. The riddle might have specific conditions or rules: Some riddles might have hidden rules or conditions that need to be applied when solving them. If these rules are not satisfied by the number 79, then it cannot be the correct answer.
3. The riddle might have a specific pattern or sequence: Riddles often involve patterns or sequences that need to be identified. If the number 79 does not fit into the existing pattern or sequence hinted at in the riddle, then it cannot be the correct answer.
Without the actual riddle itself, it is challenging to provide a definitive answer as to why 79 cannot be the answer. However, these possibilities can help us understand why Marco might have guessed incorrectly. To determine the exact reason, we would need more information about the riddle and its constraints.