a,b,c,d, are in arithmetic progression..is d>0 if
1) a and b 0
Both are needed or only 1 or 2 is sufficient to ans?

• Is this question correctly framed and mentioned over here ?
• 10 years agoHelpfull: Yes(5) No(0)
• There can be two possible on the basis of given information
  Case 1)-2, -1, 0, 1. All in AP with common difference=1. And d=1 i.e d> 0
  Case 2) -3 , -2, -1, 0 , here satisfying all the given conditions, d=0.
  
  So, we can't say for sure if d>0 or not.
  
  So, none of the statements are.sufficient to answer this question.
  
• 10 years agoHelpfull: Yes(3) No(3)
• both are needed to answer the que
  
• 10 years agoHelpfull: Yes(3) No(0)