Q. What is the next number of the following sequence
1,2,6,21,88,.....

• 1*1+1=2
  2*2+2=6
  6*3+3=21
  21*4+4=88
  88*5+5=440+5=445
• 11 years agoHelpfull: Yes(3) No(0)
• series is in this manner: (1+1)*1=2, (2+1)*2=6,(6+1)*3=21,(21+1)*4=88
  so, next term is (88+1)*5= 445 is ans.
• 11 years agoHelpfull: Yes(1) No(0)
• it can be
  1
  2=(1+1)1
  6=(2+1)2
  21=(6+1)3
  88=(21+1)4
  So 445=(88+1)5
  & 2676=(445+1)6
  
• 10 years agoHelpfull: Yes(1) No(0)
• series is coming in this pattern :
  number * it's position + it's position = next number
  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(1) No(0)
• 1*1+1=2
  2*2+2=6
  6*3+3=21
  21*4+4=88
  88*5+5=445
• 10 years agoHelpfull: Yes(1) No(0)
• 1*1+1=2
  2*2+2=6
  6*3+3=21
  21*4+4=88
  88*5+5=445
• 10 years agoHelpfull: Yes(0) No(0)