30,28,25,20,34,28,__?

• hear (30,28,25,20)(34,28,_)
  part 1st (30,28,25,20)
  30-28=2
  28-25=3
  25-20=5
  series is divided in to to part
  diff. of 1st part is in sequence of(2,3,5)=(2+3=5)
  in part 2nd
  (34,28,_)
  34-28=6
  28-?=7
  means 21 Ans
• 10 years agoHelpfull: Yes(17) No(2)
• 10
  (30,28,25)(20,34,28)
  -10,+6,+3
  
  so 20-10=10 ans
• 10 years agoHelpfull: Yes(4) No(9)
• I HAVE SEEN "21" AS ANSWER IN SOME SITES..BUT EXPLANATION WAS NOT THERE
• 10 years agoHelpfull: Yes(2) No(0)
• ans=29
  3*10=30
  4*7=28
  3*8=25
  4*5=20
  3*11=33+1=34
  4*7=28
  3*9=27+2=29
• 10 years agoHelpfull: Yes(2) No(2)
• 30,28,25,20,34,28,__?
  this is simply a joke ............ :)
  
• 10 years agoHelpfull: Yes(2) No(0)
• plz send meibm english assement test papers to my mail id and plz suggest me how to prepare for english i hav drive on 3rd feb plz anyone can help am very poor in english mail id is "swetha042@gmail.com"
• 10 years agoHelpfull: Yes(0) No(16)
• check the alternate nos.i.e.,30,25,34.
  the difference between those nos are 5,9
  the difference between 5,9 is 4.
  so we need to add 9+4=13 to 34
  then next no would be 47
• 10 years agoHelpfull: Yes(0) No(4)
• does any one knows the correct
  answer nd the explanation too ?
• 10 years agoHelpfull: Yes(0) No(3)
• plz send me ibm english test papers... i have a xamon 21st...ayshu.530@gmail.com
• 10 years agoHelpfull: Yes(0) No(1)
• ans-36
  30-2=28
  28-3=25
  25-5=20
  here we can see that 2+3=5
  hence
  20+14=34
  34-6=28
  so 14-6=8
  henc 28+8=36ans
  hence -14+6=-8
• 10 years agoHelpfull: Yes(0) No(0)
• ans: 20
  the first series 30,28,25
  and the 2nd is 34,28
  if I divide both by 2 thn i gt 17,14 difference 3
  14-4=10
  thn ans is 20
• 10 years agoHelpfull: Yes(0) No(0)