Cara, a blue whale participated in a weight loss program at the biggest office. At the end of every month, the decrease in weight from original weight was measured and noted as 1, 2, 6, 21, 86, 445, 2676. While Cara made a steadfast effort, the weighing machine showed an erroneous weight once. What was that.
option
a) 2676
b) 2
c) 445
d) 86

• 1*1+1=2
  2*2+2=6
  6*3+3=21
  21*4+4=88 and not 86
  
• 10 years agoHelpfull: Yes(71) No(1)
• ans 86
  1=
  2= 1*1+1
  6= 2*2+2
  21= 3*6+3
  88= 4*21+4
  445=5*88+5
  2676=6*445+6
  
• 10 years agoHelpfull: Yes(9) No(1)
• ans is 86.
  1*1+1=2
  2*2+2=6
  6*3+3=21
  21*4+4=88
  88*5+5=445
  445*6+6=2676.
• 10 years agoHelpfull: Yes(3) No(2)
• 1+2=6
  hence 4+5+10'
  so r8 ans iz 86
• 10 years agoHelpfull: Yes(1) No(5)
• SOL: This is a number series problem nothing to do with the data given.
  1x 1+1=2
  2 x 2+2=6
  6 x 3+3=21
  21 x 4+4=88 and not 86
  88 x 5+5 = 445
  445*6+6 = 2676
• 6 years agoHelpfull: Yes(0) No(0)