Day 25: CDS Maths

1. A.
   $\dfrac{27}{43}$
2. B.
   $\dfrac{43}{27}$
3. C.
   $-\dfrac{27}{43}$
4. D.
   $-\dfrac{43}{27}$

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1. A.
   $a + b = c + d$
2. B.
   $a + c = b + d$
3. C.
   $a - b - c + d = 0$
4. D.
   $a + b + c + d = 0$

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1. A.
   $\frac{8\pi}{3}$ square cm
2. B.
   $\left(16\sqrt{3} - \frac{8\pi}{3}\right)$ square cm
3. C.
   $(16\sqrt{3} - 8\pi)$ square cm
4. D.
   $\frac{16\pi}{\sqrt{3}}$ square cm

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1. A.
   1
2. B.
   $\log_{10}2$
3. C.
   $\log_{10}5$
4. D.
   $2\log_{10}5$

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1. A.
   420
2. B.
   210
3. C.
   200
4. D.
   168

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