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Thread: what is the missing number in this maths sequence?

  1. #1
    Join Date
    Aug 2007
    Posts
    1

    Default what is the missing number in this maths sequence?

    1,2,6,21,_,445

  2. #2
    Join Date
    Aug 2007
    Posts
    2

    Default

    Can't argue with the above answers.

  3. #3

    Default

    Hello

    can't this sequence is correct or not but no above ans specific please more details information ?

  4. #4
    Join Date
    Feb 2012
    Location
    Indore
    Posts
    27

    Default

    I resign... I am not able to figure out the anwer.. kindly answer.. it is killing me.

  5. #5
    Join Date
    Jun 2014
    Location
    Bangalore, India.
    Posts
    6

    Default

    I think it is 88.
    1*1+1=2
    2*2+2=6
    6*3+3=21
    21*4+4=88
    88*5+5=445
    Hence 88 is the missing number

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