Two series Questions? 11, 12, 14, 17, ...

11, 12, 14, 17, 21 (ans) 

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Neer

  • Jun 2nd, 2005
 

26

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Brijesh

  • Jan 18th, 2006
 

Correct Ans is 2411+1=1212+2=1414+3=1717+4=21

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coolgoose20

  • Jun 15th, 2007
 

11+1=12
12+2=14
14+3=17
17+4=21.......................

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11 + 1 = 12   difference is 1
12 + 2 = 14   difference is 2
14 + 3 = 17   difference is 3

hence now
difference required is 4
17 + 4 = 21

Thank You and Keep the spirit

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