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Discuss Puzzles within the Quant forums, part of the CAT, XAT, MAT, CET, JMET and other Indian MBA Entrance Exams category; Which number complete this series? 5, 7 11, 13, 17, ? Answer: 19: explanation: as move towards right series follow ...

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Arti Omar
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Puzzles - January 23rd, 2013

Which number complete this series?

5, 7 11, 13, 17, ?

Answer: 19: explanation: as move towards right series follow the sequence of odd numbers.
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Tushar Rathi
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Re: Puzzles - January 24th, 2013

@Arti according to my opinion answer is write but wrong explanation.
If as move towards right series follow the sequence of odd numbers then where is 9 and 15.
It can be solve by two methods:

(1) as move towards right series follow the sequence of prime numbers.

(2) +2 +4 +2 +4 +2 These are the difference between tow consequence numbers.
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Arti Omar
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Re: Puzzles - January 24th, 2013

yeah you are right a bit more to add this explanation which probably I forgot to mention is, as move towards right series follow the sequence of "prime odd" numbers. So 9 and 15 can't be the part of this series because they are not prime numbers...

Hope this time you get me right!!

And thanks for pointing this fault..
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