Day 95: NDA Maths

1. A.
   $\frac{1}{8}$ square unit
2. B.
   $\frac{1}{4}$ square unit
3. C.
   $\frac{1}{2}$ square unit
4. D.
   1 square unit

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1. A.
   $e^x+e^y=c$
2. B.
   $e^{x+y}=c$
3. C.
   $e^x-e^y=c$
4. D.
   $e^{x-y}=c$

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1. A.
   $\begin{vmatrix}a&b&c\\p&q&r\\l&m&n\end{vmatrix}$
2. B.
   $\begin{vmatrix}l&m&n\\a&b&c\\p&q&r\end{vmatrix}$
3. C.
   $\begin{vmatrix}p&q&r\\a&b&c\\l&m&n\end{vmatrix}$
4. D.
   $\begin{vmatrix}a&p&l\\b&q&m\\c&r&n\end{vmatrix}$

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1. A.
   $0$
2. B.
   $p+q$
3. C.
   $pq$
4. D.
   $pq(p+q)$

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

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