If a>b>c>d>e>0 and the avg of a & e is 7 and b & d is 4.5.How many possible combination will satisfy the above condition?
i think question was smthing like that came in 22 nov elitmus ph test....

• a+e=14 so (13,1) (12,2) (11,3) (10,4) (9,5) b/w a and e 3 digits should be there min and a>e so we cant take other otions simillerly
  b+d=9 can be (7,2) (6,3) min 1 digit gap and b>d
  
  but (11,4) (10,3) (9,4) do not valid for the above pair of b and d
  
  (1 2 3 7 13)
  (1 2 4 7 13)
  (1 2 5 7 13)
  (1 2 6 7 13)
  (1 3 4 6 13)
  (1 3 5 6 13)
  (2 3 5 6 12)
  (2 3 4 6 12)
  ans 8
  
  
• 9 years agoHelpfull: Yes(25) No(1)
• (e,d,c,b,a) = (1 2 3 7 13) (1 2 4 7 13) (2 3 4 6 12) (1 2 5 7 13) (1 2 6 7 13) (1 3 4 6 13) (2 3 5 6 12) (1 3 5 6 13)
  Therefore answer is 8.
• 9 years agoHelpfull: Yes(2) No(0)
• a+e=14
  ∆ (13,1),(12,2),(11,3),(10,4),(9,5)
  possible pairs since minimum difference between the digits must be 3 (b,c,d)
  b+d= 9
  ∆ (7,2),(6,3),(8,1)
  difference 1 (c)
  
  8 pairs
• 8 years agoHelpfull: Yes(1) No(0)
• Priya why u don't take combination with 11 in ( e,d,c,b,a)
• 8 years agoHelpfull: Yes(0) No(0)