if a , a+1, a+2 are prime numbers, then the number of possible solution of a is....??

• there is no such value of a possible.
  because if we consider a= even number
  then a and a+2 will be divisible by 2 and hence cannot be prime.
  if a= odd then a+1= even.
  so there is no such value of a is possible except a=1 but 1 is not considered as a prime number.
• 10 years agoHelpfull: Yes(11) No(2)
• 1 possibility
  
  a=2
  
  
• 10 years agoHelpfull: Yes(1) No(6)
• a=2,a=3,a=5
  /....1 soln..
  
• 10 years agoHelpfull: Yes(1) No(5)
• the only solution can be a=1;
  however we don't consider 1 to be a prime and so I don't think this is a great solution.
  however this is the only solution.
• 10 years agoHelpfull: Yes(0) No(1)
• no value
  
• 10 years agoHelpfull: Yes(0) No(0)