Day 43: NDA Maths

1. A.
   $8, 2, \frac{1}{2}, \frac{1}{8}, \cdots$
2. B.
   $10, 2, \frac{2}{5}, \frac{2}{25}, \cdots$
3. C.
   $4, 2, 1, \frac{1}{2}, \frac{1}{2^2}, \cdots$
4. D.
   $6, 3, \frac{3}{2}, \frac{3}{4}, \cdots$

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

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1. A.
   $\frac{1}{24}$
2. B.
   $-\frac{1}{24}$
3. C.
   $-\frac{1}{6}$
4. D.
   $\frac{1}{6}$

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1. A.
   $\frac{x^2}{25}+\frac{y^2}{9}=1$
2. B.
   $\frac{x^2}{16}+\frac{y^2}{9}=1$
3. C.
   $\frac{x^2}{25}+\frac{y^2}{16}=1$
4. D.
   $\frac{x^2}{9}+\frac{y^2}{25}=1$

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1. A.
   $(0, \infty)$
2. B.
   $(0, \infty) - \{1\}$
3. C.
   $(0, \infty) - \{e\}$
4. D.
   $(0, \infty) - \{10\}$

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