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sidbidus
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From (i)


The possible series of positive odd numbers satisfying the given condition will be:

13, 21, 29, 37,... and so on.

Any number of the above series, when divided by 4 will give the the remainder as 1.

Thus (i) us sufficient.

From (ii)

The possible series of positive odd numbers satisfying the given condition will be:

5, 13, 17, ... and so on ( 1^2+2^2, 2^2+3^2....etc. )

Each when divided by 4 will give the remainder as 1.

Thus sufficient.

Answer should be "D". Both (I) and (II) are sufficent to answer the question.



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