1/2, 2, 9/2, 8, __
a. 15/2
b. 25/2
c. 25
d. 50

• In this series, the no.s are in squares and divided by 2.
  Ex : ((1)^2)/2 , ((2)^2)/2 , ((3)^2)/2 ,((4)^2)/2 ,((5)^2)/2 ....
  so 1/2, 2, 9/2, 8, 25/2
• 4 years agoHelpfull: Yes(1) No(0)
• ans is 25/2
  coz difference is increases in the sequence of 1.5, 2.5,3.5,4.5
  
• 10 years agoHelpfull: Yes(0) No(1)
• b is correct
• 10 years agoHelpfull: Yes(0) No(1)
• ans is 25/2
• 9 years agoHelpfull: Yes(0) No(1)
• ans is 25/2
• 9 years agoHelpfull: Yes(0) No(1)
• 2-1/2=3/2
  9/2-2=5/2
  8-9/2=7/2
  ?-8=9/2
  so, ANS IS 8=9/2=25/2
• 8 years agoHelpfull: Yes(0) No(1)