2,12,30,56,90,?

• 1*2=2
  3*4=12
  5*6=30
  7*8=56
  9*10=90
  11*12=132 so answer is 132
• 9 years agoHelpfull: Yes(85) No(0)
• Answer is 132
  because if we see
  12-2=10
  30-12=18
  56-30=26
  90-56=34
  
  Now if we can see that
  here difference of difference is coming 8 i.e.
  18-10=8
  26-18=8
  34-26=8
  
  so to next difference of 8 .. last term should be 42 more than 90(because 34+8=42)
  so 90+42=132
  answer
• 9 years agoHelpfull: Yes(19) No(1)
• 1^2+1=2
  3^2+3=12
  5^2+5=30
  7^2+7=56
  9^2+9=90
  11^2+11=132
• 9 years agoHelpfull: Yes(4) No(0)
• difference of difference
  2 12 30 56 90
  10 18 26 34
  8 8 8
  so that 34+8=42
  2 12 30 56 90
  10 18 26 34 42
  8 8 8 8
  
  
  now 42+90=132
  
  2 12 30 56 90 132
  10 18 26 34 42
  8 8 8 8
• 9 years agoHelpfull: Yes(3) No(0)
• 2+10=12
  12+18=30
  30+26=56
  56+34=90
  90+42=132
  
  
• 9 years agoHelpfull: Yes(1) No(1)
• 1*2=2
  3*4=12
  5*6=30
  .
  .
  .
  11*12=132
• 9 years agoHelpfull: Yes(1) No(0)
• 1*2=2
  3*4=12
  5*6=30
  7*8=56
  9*10=90
  11*12=132
• 9 years agoHelpfull: Yes(1) No(0)
• 1*2=2
  3*4=12
  5*6=30
  7*8=56
  9*10=90
  11*12=132 so answer is 132
• 5 years agoHelpfull: Yes(1) No(0)
• yes ans is 132
• 9 years agoHelpfull: Yes(0) No(1)
• 12-2 = 10
  30-12 = 18
  56-30 = 26
  90-56 = 34
  
  now we get new series as 10, 18, 26, 34, 42(differ by 8)
  
  then add 90+42 = 132
  
  answer is 132... :)
  
• 9 years agoHelpfull: Yes(0) No(0)
• 1^2 +1=2
  3^2 +3=12
  5^2 +5=30
  7^2+7=56
  9^2+9=90
  11^2+11=132
• 9 years agoHelpfull: Yes(0) No(0)
• 132
  1*2=2
  3*4=12
  5*6=30
  7*8=56
  9*10=90
  11*12=132
• 9 years agoHelpfull: Yes(0) No(0)
• answer is =
  132
• 6 years agoHelpfull: Yes(0) No(0)
• 132
  if we subtract the given numbers we get 10,18,26,34 and again subtracting this we will get a equal value of 8 ,adding 8 to 34 we get 42 .42+90=132
• 5 years agoHelpfull: Yes(0) No(0)