23,38,45,64,67,?
Complete the series.

• 23 38 45 64 67
  since there is no continuous relation between these terms. hence
  difference between 1st and 3rd term i.e 23 and 45 is=22
  again, difference between 2nd and 4th i.e 23 and 64=26
  again,between 3rd and 5th is i.e 45 and 67 is 22
  hence the next difference should be 26.
  therefore,the next term is=64+26
  =90
  hence ans=90
  
• 13 years agoHelpfull: Yes(6) No(2)
• 23,38,45,64,67, 90
  because
  difference between 23 & 38 =15
  difference between 38 & 45 =7
  difference between 45 & 64 =19
  difference between 64 & 67 =3
  so alternate increase +4 and decrease -4
  then the next number is +4 means 19+4=23
  so 67+23=90
  
  ans is 90
  
• 13 years agoHelpfull: Yes(1) No(0)
• Diff between 23 & 45 =22 and 45 & 67=21
  Then diff between 38 & 64=26 and the it will 64+25=89
• 13 years agoHelpfull: Yes(0) No(1)
• this pattern is a combination of two patterns :- the first one is :- 23,45,67 the second one is :- 38,64,? hence the unknown number is 90.
• 4 years agoHelpfull: Yes(0) No(0)