Q. 0,6,6,20,20,42,..... Next number in the series is?

• 1^2-1,2^2+2,3^2-3,4^2+4,5^2-5,6^2+6,7^2-7,8^2+8
• 11 years agoHelpfull: Yes(36) No(1)
• 0*1=0
  2*3=6
  2*3=6
  4*5=20
  4*5=20
  6*7=42
  6*7=42
  8*9=72
  so, ans is 72
• 11 years agoHelpfull: Yes(12) No(11)
• 0 6 6 20 20 42 ?
  6 0 14 0 22 0 30 0
  so ans: 42
• 11 years agoHelpfull: Yes(11) No(1)
• 1^2-1=0
  2^2+2=6
  3^2-3=6
  4^2+4=20
  5^2-5=20
  6^2+6=42
  7^2-7=42
• 11 years agoHelpfull: Yes(5) No(1)
• 0
  0+6=6
  6+0=6
  6+14=20
  20+0=20
  20+22=42
  42+0=42Ans
• 11 years agoHelpfull: Yes(2) No(2)
• 42 , 72 take x=0,1,2,... in the series we have taken two times same values of x so answer is 42,72,72,110,110,...f(x) = 4x^2 + 2x
• 11 years agoHelpfull: Yes(1) No(0)
• 0*1=0
  1*0=0
  2*3=6
  3*2=6
  4*5=20
  5*4=20
  6*7=42
  7*6=42
  8*9=72
  9*8=72
• 10 years agoHelpfull: Yes(1) No(1)
• ans:42
  (1*1)-1=0
  (2*2)+2=6
  (3*3)-3=6
  (4*4)+4=20
  (5*5)-5=20
  (6*6)+6=42
  (7*7)-7=42
• 10 years agoHelpfull: Yes(1) No(0)
• 42
  
  if we observe the series,each number is repeating twice.so the next number is 42.you may ask that why 0 is not repeated? we are not sure that 0 is the 1st num in the series
• 11 years agoHelpfull: Yes(0) No(1)
• 42.
  ...difrn itself in difrn of 8
• 11 years agoHelpfull: Yes(0) No(0)
• differ +6 0 +14 0 +22 0 30
  6+8=14
  14+8=22
  add 0 to 42 we get 7th term
• 11 years agoHelpfull: Yes(0) No(0)
• 0 6 6 20 20 42 72
  6 14 22 30
  8 8 8
  take difference
  hence the answer is 72
• 10 years agoHelpfull: Yes(0) No(0)
• 2*3=6
  2*3=6
  4*5=20
  4*5=20
  6*7=42
  6*7=42
  so the next no will be 42.
• 10 years agoHelpfull: Yes(0) No(1)
• 1^1 -1 = 0
  2^2+2 = 6
  3^3-3 =6
  4^4+4 =20
  5^5-5 =20
  6^6+6 =42
  7^7-7=42
  so the answer is 42
• 10 years agoHelpfull: Yes(0) No(0)
• ANS IS 42
  1^2-1 2^2+2 3^2-3 4^2+4 5^2-5 6^2+6 7^2 -7 ...........................
• 10 years agoHelpfull: Yes(0) No(0)
• 2^2+2=6
  4^2+4=20
  6^2+6=42
  8^2+8=72
  All are even numbers
• 6 years agoHelpfull: Yes(0) No(0)