Asked by anonymous1
Two consecutive odd primes, such as 11 and 13, are called a pair of "twin primes" how many pairs of twin primes are there between 15 and 45?
F-2
G-3
H-4
J-5
K-7
F-2
G-3
H-4
J-5
K-7
Answers
Answered by
drwls
Make a list of odd consecutive pairs. It cannot include 15, 21, 25, 27, 33, 35, 39, or 45.
17 - 19
29 - 31
41 - 43
A total of three
I can't think of any others. Can you?
17 - 19
29 - 31
41 - 43
A total of three
I can't think of any others. Can you?
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