Asked by Aryanna
it is a number between 60 and 100 the one place is two more than the tens place and it is a prime number, what is the number?
Answers
Answered by
oobleck
the ones place must be 1,3 or 7
1 is out, so the only candidates are 13 and 57
So pick the prime.
1 is out, so the only candidates are 13 and 57
So pick the prime.
Answered by
oobleck
good thing you posted this twice. See your 2nd post.
Answered by
Bosnian
100 is not prime number.
The prime numbers 60 to 99 are:
67, 71 , 73 , 79 , 83 , 89 , 97
The one place is two more than the tens place only for 79.
So answer is 79.
OR
Numbers 60 to 99 where the one place is two more than the tens place are:
68 and 79
68 = 2 • 2 • 17
This means 68 is not prime.
Answer is 79.
The prime numbers 60 to 99 are:
67, 71 , 73 , 79 , 83 , 89 , 97
The one place is two more than the tens place only for 79.
So answer is 79.
OR
Numbers 60 to 99 where the one place is two more than the tens place are:
68 and 79
68 = 2 • 2 • 17
This means 68 is not prime.
Answer is 79.
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