Day 33: NDA Maths

1. A.
   $\sqrt{a^2+b^2}+c$
2. B.
   $\sqrt{a^2+b^2+c}$
3. C.
   $\sqrt{a^2+b^2-c}$
4. D.
   $\sqrt{a^2+b^2}$

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

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1. A.
   $\cos x$
2. B.
   $\cos x^2$
3. C.
   $\cos^2 x$
4. D.
   $\cos|x|$

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

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1. A.
   $625$
2. B.
   $400$
3. C.
   $196$
4. D.
   $120$

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

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