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# series

Can you please complete the series

675,484,004,163, ?

What would be at the place of '?'

I don't know the answer. Please give it quickly.

Note by Lakshya Singh
1 year, 9 months ago

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The thing that puzzles me, is why put "004" instead of 4?

My conclusion is possibly write the numbers backwards? In that case this would be the sequence:

576, 484, 400, 361

- 1 year, 9 months ago

Yes, the answer should be 423 @Lakshya Singh

- 1 year, 9 months ago

Why is that?

- 1 year, 8 months ago

It follows the series of decreasing perfect squares writyem in reverse order.

- 1 year, 8 months ago

and the answer should be 652

- 1 year, 8 months ago

Comment deleted May 29, 2016

no,the pattern follows as the reverse of $$24^2,22^2,20^2,$$ and then it should be $$18^2,?.$$the pattern $$24,22,20,18,?(16)$$

- 1 year, 8 months ago

Oh ok that was my bad but 163 is the reverse order of $${19}^2$$ so this is wrong too XD

- 1 year, 8 months ago

actually the question should be 675,484,004,423,?

- 1 year, 8 months ago