Question
The value of $7^{\frac{1}{2}}.8^{\frac{1}{2}}$ is:
✓
Answer
- $(56)^\frac{1}{2}$
Solution:
$(7)^{\frac{1}{2}}\times(8)^{\frac{1}{2}}=(7\times8)^{\frac{1}{2}}=(56)^{\frac{1}{2}}$
Hence, the correct answer is option (b).
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write the correct answer in the following:
Median of the following numbers, 4, 4, 5, 7, 6, 7, 7, 12, 3 is:
Median of the following numbers, 4, 4, 5, 7, 6, 7, 7, 12, 3 is:
If $x$ is mean of $x_1, x_2, .....$ then for $\text{a}\neq0,$ the mean of $ax_1, ax_2, ....ax_n, \frac{\text{x}_1}{\text{a}},\frac{\text{x}_2}{\text{a}},...\frac{\text{x}_n}{\text{a}},$ is:
→For what value of $k$ is the polynomial $p(x) = 2x^3 - kx^2 + 3x + 10$ exactly divisible by $(x + 2)$?
→The figure formed by joining the mid-points of the adjacent sides of a rhombus is a:
If the length of a median of an equilateral triangle is x cm, then its area is:
The graph of the linear equation 2x + 5y = 10 meets the x-axis at the point:
-
(0, 2)
-
(2, 0)
-
(5, 0)
-
(0, 5)
The points A(-2,3), B(-2,-4) and C(5,-4) are the vertices of the square ABCD, then the co-ordinates of the vertex D are:
Write the correct answer in the following:
In Fig. if $\text{AB}||\text{CD}||\text{EF},\text{PQ}||\text{RS},$ $\angle\text{RQD}=25^\circ$ and $\angle\text{CQP}=60^\circ,$ then $\angle\text{QRS}$ is equal to.
→In Fig. if $\text{AB}||\text{CD}||\text{EF},\text{PQ}||\text{RS},$ $\angle\text{RQD}=25^\circ$ and $\angle\text{CQP}=60^\circ,$ then $\angle\text{QRS}$ is equal to.
- 85°
- 135°
- 145°
- 110°
If n is a natural number, then $\sqrt{\text{n}}$ is:
→