Hi aspirant,
You have not mention the session for the sample paper for which you want the solutions. So from general point of view I am providing you the link of previous year questions for NDA mathematics which will enormously help you in the preparation by building speed and giving idea about the toughness level of questions.
NDA session and year
Mathematic Question paper links
GAT question paper links
NDA 1 and 2 2020
NDA 2020 Mathematics question paper
NDA 2020 GAT question paper
NDA 2 2019
NDA 2 2019 Mathematics question paper
NDA 2 2019 GAT question paper
NDA 1 2019
NDA 1 2019 Mathematics question paper
NDA 1 2019 GAT question paper
NDA 2 2018
NDA 2 2018 Mathematics question paper
NDA 2 2018 GAT question paper
NDA 1 2018
NDA 1 2018 Mathematics question paper
NDA 1 2018 GAT question paper
NDA 2 2017
NDA 2 2017 Mathematics question paper
NDA 2 2017 GAT question paper
NDA 1 2017
NDA 1 2017 Mathematics question paper
NDA 1 2017 GAT question paper
Hope it helps!!
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