Day 246: NDA Maths

1. A.
   $\frac{80}{729}$
2. B.
   $\frac{10}{81}$
3. C.
   $\frac{10}{243}$
4. D.
   $\frac{160}{729}$

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1. A.
   $\frac{665}{729}$
2. B.
   $\frac{64}{729}$
3. C.
   $\frac{4}{243}$
4. D.
   $\frac{1}{729}$

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1. A.
   $\frac{728}{729}$
2. B.
   $\frac{665}{729}$
3. C.
   $\frac{653}{729}$
4. D.
   $\frac{596}{729}$

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1. A.
   $2$
2. B.
   $3$
3. C.
   $4$
4. D.
   $6$

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1. A.
   $x^2 + y^2 = 1$
2. B.
   $x^2 + y^2 = 25$
3. C.
   $x^2 + y^2 = 100$
4. D.
   $x^2 + y^2 - 2x - 2y - 23 = 0$

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1. A.
   $-1$
2. B.
   $0$
3. C.
   $1$
4. D.
   $2$

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1. A.
   $\sqrt{7}$
2. B.
   3
3. C.
   7
4. D.
   9

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1. A.
   0.5
2. B.
   0.75
3. C.
   1.0
4. D.
   1.25

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