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1, 9, 25, 49, ?, 121...

1, 9, 25, 49, ?, 121

A

64

B

81

C

91

D

100

Text Solution

Verified by Experts

The correct Answer is:
B
The given series consists of squares of consecutive odd numbers:

Therefore, missing term =` 9^(2) = 81`.
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In the following number series, two numbers have been put within brackets. Select the most appropriate option for these numbers in relation to their inclusion in the series. 1, 9, 25, 49, (81), 121, 169, (215), 289

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Find f^(-1) if it exists: f: A->B where A={1,\ 3,\ 5,\ 7,\ 9}; B= {0,\ 1,\ 9,\ 25 ,\ 49 ,\ 81} and f(x)=x^2 .

_______ 9,25, 49, 121,169

Find the missing term in each of the following series. "…….." ,9,25,49,81,121

LUCENT PUBLICATION-SERIES COMPLETION : NUMBER -EXERCISE-3
  1. 1, 9, 25, 49, ?, 121

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  4. {:(4,2.25,3.25,7.125,18.25,51.875),(7,"(a)","(b)","(c)", " (d)"," (e)"...

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  5. {:(3,40,176,537,1078,1079),(1,"(a)","(b)","(c)", " (d)"," (e)"):} Wh...

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  6. {:(3,5,22,13.5,35,19),(5,"(a)","(b)","(c)", "(d)","(e)"):} What will...

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  7. {:(9,10,16,57,212,1085),(2,"(a)","(b)","(c)", "(d)","(e)"):} What wi...

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  9. {:(3,12,30,66,138,282),(7,"(a)","(b)","(c)", "(d)","(e)"):} What wil...

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  10. {:(2,3,10,39,172,885),(5,"(a)","(b)","(c)", "(d)","(e)"):} What will...

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  11. {:(3,5,22,13.5,35,19),(1,"(a)","(b)","(c)", "(d)","(e)"):} What will...

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  12. {:(2,3,7,25,121,721),(3,"(a)","(b)","(c)", "(d)","(e)"):} What will ...

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  13. {:(4,2,3,7.5,26.25,118.125),(6,"(a)","(b)","(c)", "(d)","(e)"):} Wha...

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