Day 343: NDA Maths

1. A.
   Both the roots are real
2. B.
   One root is real and the other is complex
3. C.
   Both the roots are complex
4. D.
   Cannot say

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1. A.
   $(-5)^{2n-1}$
2. B.
   $(-1)^{2n} 5^{n+1}$
3. C.
   $(-1)^{2n-1} 5^{n+1}$
4. D.
   $(-1)^{n-1} 5^{n+1}$

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1. A.
   $\sqrt{2}$
2. B.
   2
3. C.
   $2\sqrt{2}$
4. D.
   4

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1. A.
   $\frac{1}{3}$
2. B.
   $\frac{2}{3}$
3. C.
   $\frac{3}{4}$
4. D.
   $\frac{3}{5}$

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1. A.
   1 and 2 only
2. B.
   2 and 3 only
3. C.
   1 and 3 only
4. D.
   1, 2 and 3

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