Question

how to apply pattern for this question?

Answer 1

100001^2 = 10000200001

One zero in question = one zero before two and one after two.

Same goes in each question.

Answer 2

$here \: in \: this \: question \\ \\ when \: no \: zero \: between \: 11 \: then \: 121 \\ 1zero \: between \: 11 \: i.e \: 101 \: then \: 2zeroes \: get \: added \: before \: 2 \: and \: after \: 2 \\ \\ this \: is \: the \: concept$
$it \: is \: asked \: when \: 4\: zeroes \: given \: between \: 11 \: so \: answer \: will \: be \\ 10000200001$
No. of zeroes between 11
same zeroes will be before and after 2 in result.