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Q: All co primes twin primes. True or false?

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3,5 5,7 11,13 17,19 29,31 41,43 59,61 71,73

170 and 190 are composite numbers, not primes. Twin primes are pairs of prime numbers that differ from each other by two. Examples of all twin primes less than 200 are (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73), (101, 103), (107, 109), (137, 139), (149, 151), (179, 181), (191, 193), and (197, 199).

False

true

False.

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Not true. 2 + 3 = 5, where all three are primes. One of the primes in the sum must be 2, otherwise both primes would be odd and their sum would be even (and >2) and therefore not prime. Such primes: p and p+2 [3 and 5 in the above example] are known as twin primes and there are infiitely many twin primes.

Here are all the twin primes between 100 and 200.(101, 103), (107, 109), (137, 139), (149, 151), (179, 181), (191, 193), and (197, 199).Twin primes are prime numbers that differ from each other by 2.

All the twin primes between 50 and 100 are (53, 59) (61, 67) (71, 73) (79, 83) (89, 91)

There is no known prime formula to identify all primes. There are some formulae that work only for some classes of primes. Mathematicians have

Twin primes are pairs of prime numbers that differ from each other by two. Examples of all twin primes less than 100 are (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), and (71, 73).

101

There are an infinite number of pairs of prime two apart, classified as "twin primes". For lists, see the link.

false

true

True

Yes. If all the question's parts are true, then the answer is true. If all the question's parts are false, then the answer is false. If one of the question's parts is false and the rest true, then the answer is false. Logically, this is illustrated below using: A = True, B = True, C = True, D = False, E = False, F = False A and B and C = True D and E and F = False A and B and D = False If you add NOT, it's a bit more complicated. A and NOT(D) = True and True = True NOT(D) and D = True and False = False NOT(A) and NOT(B) = False and False = False Using OR adds another layer of complexity. A OR NOT(E) = True OR True = True NOT(D) OR D = True OR False = False NOT(A) OR NOT(B) = False OR False = False Logic is easy once you understand the rules.

Dictionary meaning's are all true they are not false.

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