sequence!

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sequence!

by marmar29 » Tue Aug 23, 2011 12:02 am
1,3,11,123,....

a- 15129
b- 15130
c- 15131
d- 15132
e- 15133
just checking is it c ?
am i right


2,6,14 ,......
a)10
b)20
c)30
d)40
e)50
also i answered it c ..am i right ??


4,9,24 , ......
a- 67
b- 68
c- 69
d- 70
e - 71
is it c ??

thankz aloot folks:)
thanks aloot folks!

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by Anurag@Gurome » Tue Aug 23, 2011 12:49 am
marmar29 wrote:1,3,11,123,....
3 = 1^2 + 2
11 = 3^2 + 2
123 = 11^2 + 2

Hence, the next term will be (123^2 + 2) = 15131

The best answer is C.
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by Anurag@Gurome » Tue Aug 23, 2011 12:51 am
marmar29 wrote:2,6,14 ,......
6 = 2*2 + 2
14 = 2*6 + 2

So the next term can be (2*14 + 2) = 30

The best answer is C.
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by Anurag@Gurome » Tue Aug 23, 2011 12:53 am
marmar29 wrote:4,9,24 , ......
9 = 3*(4 - 1)
24 = 3*(9 - 1)

Hence, the next term can be 3*(24 - 1) = 69

The best answer is C.
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