Question
$9^3 + (-3)^3 - 6^3 =$ ?
✓
Answer
$9^3 + (-3)^3 - 6^3 = 729 - 27 - 21 6 = 486$
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Which one of the following is not equal to $\Big(\frac{100}{9}\Big)^{-\frac{3}{2}}?$
→- $\Big(\frac{9}{100}\Big)^{\frac{3}{2}}$
- $\bigg(\frac{1}{\frac{100}{9}}\bigg)^{\frac{3}{2}}$
- $\frac{3}{10}\times\frac{3}{10}\times\frac{3}{10}$
- $\sqrt{\frac{100}{9}}\times\sqrt{\frac{100}{9}}\times\sqrt{\frac{100}{9}}$
Write the correct answer in the following:
The radius of a hemispherical balloon increases from 6cm to 12cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is:
The radius of a hemispherical balloon increases from 6cm to 12cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is:
In the given figure, O is the centre of a circle. Then, $\angle\text{OAB}=?$
→- 50°
- 60°
- 55°
- 65°
$(125)^{-\frac{1}{3}}=?$
→-
5
-
-5
-
$\frac{1}{5}$
-
$-\frac{1}{5}$
In a quadrilateral ABCD, if AO and BO are the bisectors of $\angle\text{A}$ and $\angle\text{B}$ respectively, $\angle\text{C}=70^{\circ}$ and $\angle\text{D}=30^{\circ}.$ Then, $\angle\text{AOB}=?$
→- 40°
- 50°
- 80°
- 100°
If $a + b + c = 0$ then $\Big(\frac{\text{a}^2}{\text{bc}}+\frac{\text{b}^2}{\text{ca}}+\frac{\text{c}^2}{\text{ab}}\Big)=$?
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In a cylinder, if radius is halved and height is doubled, the volume will be:
- Same.
- Doubled.
- Halved.
- Four times.
