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What is the next number

 
Rakesh Joshi
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77 - 49 - 36 - 18 - ?
What is the next number in the above number series?
 
Ulf Dittmer
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8
 
Rakesh Joshi
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Ulf Dittmer
8


How ?
 
Sameer Jamal
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8x1=8
 
Rakesh Joshi
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8x1=8

Very funny, Keep it up
 
Shaan Shar
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As 7X7=49 and 4X9=36 and 3X6=18 so in that manner it's 1X8=8.

Now finish up this quiz and ... give up all members.
 
Arjunkumar Shastry
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Then its not a number series but set,
{77,49,36,18,8}
 
Rakesh Joshi
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77 49 36 18
49 36 18 15
-----------------
28 13 18 03
-----------------

15 is the next number
 
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