if q,q+2,q+6 are all prime, what can be 3q+9?

• by trial and error method q=5
  
  if q=5
  then q+2=5+2=7
  and q+6=5+6=11 are also primes
  
  now 3q+9=(3x5)+9
  =15+9
  =24
  
  so the answer is 3q+9=24
• 12 years agoHelpfull: Yes(7) No(3)
• If q=11, then
  11,13,17 are also prime.
  3q+9= 42
  
  if q=17,
  17,19,23 are prime numbers.
  then 3q+9= 60
  
  so no unique solution.
• 12 years agoHelpfull: Yes(6) No(5)
• q = 7
  7+2 = 9
  7+6 = 13
  3q+9 : 21+9=30
• 12 years agoHelpfull: Yes(1) No(3)
• put q=5 which satisfies the conditions then 3*5+9=24
• 12 years agoHelpfull: Yes(0) No(3)
• q,q+2,q+6 all are prime
  q=5 satisfies all the possibilities
  so 3q+9=3(5)+9=24
• 12 years agoHelpfull: Yes(0) No(5)
• 24
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• 11 years agoHelpfull: Yes(0) No(1)