2,6,12,...,30,42,56

• ans:20 because the series in the form of 1^2+1=2, 2^2+2=6 ,3^2+3=12 ,4^2+4=20 ,5^2+5=30 upto remaing term.....
• 13 years agoHelpfull: Yes(21) No(5)
• 2,6,12,...,30,42,56
  1*2 , 2*3 , 3*4 , 4*5 , 5*6 , 6*7 , 8*7
  
  then ans is 20
• 13 years agoHelpfull: Yes(18) No(0)
• ans:20
  6-2=4
  12-6=6
  .
  .
  .
  30-12=18
  .
  .
  42-30=12
  56-42=14
  
  all the differences are multiples of 2..we can divide 18 into 8 and 10..hence we get 12+8=20..
  
• 13 years agoHelpfull: Yes(5) No(1)
• difference between first two numbers is 4.
  then the diff bw next two no. is 6.
  so the next terms will 20 because the diff is 8 bw 20 & 12.
• 13 years agoHelpfull: Yes(3) No(0)
• 20
  since
  2+4=6
  6+6=12
  12+8=20
  20+10=30
  ...and so on
• 13 years agoHelpfull: Yes(2) No(1)
• here the series is 1*2=2
  2*3=6
  3*4=12
  4*5=20
  5*6=30
  therefore the series is 2,6,12,20,30 and the answer is 20
  
• 13 years agoHelpfull: Yes(2) No(0)