MCQ
Which of the following is an rational number$?$
- A$0.323223222322223$
- B$\sqrt{180}$
- C$\sqrt{31}$
- ✓$\sqrt{196}$
✓
Answer
Correct option: D.
$\sqrt{196}$
Because it is the square of $14$ and can be Written in the form of $\frac{\text{p}}{\text{q}}.$
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
How many lines pass through one point?
The $CSA$ of a right circular cylinder whose base radius is $x$ units and height is $z$ units is:
→A cylindrical rod whose height is $8$ times of its radius is melted and recast into spherical balls of same radius. The number of balls will be:
→The abscissa of any point on $y$-axis is:
→Side BC of $\triangle\text{ABC}$ has been produced to $D$ on left-hand side and to $E$ on right-hand side such that $\angle\text{ABD}=125^\circ$ and $\angle\text{ACE}=130^\circ.$ Then $\angle\text{A}=?$ 
→In the given figure, $ABCD$ is a parallelogram in which $\angle\text{BDC} = 45^\circ$ and $\angle\text{BAD} = 75^\circ.$ Then, $\angle\text{CBD} =\ ?$
→The diameters of two cones are equal. If their slant heights are in the ratio $5 : 4$, the ratio of their curved surface areas, is:
→A cylindrical piece of maximum volume has to be cut out of an iron cube of edge $4\ cm.$ Then, the maximum volume of the iron cylinder is:
→If the diameter of a cylinder is $28\ cm$ and its height is $20\ cm$ then its curved surface area is:
→If $\text{x}=4-\sqrt{15},$ then the value of $(\text{x}+\frac{1}{\text{x}})$ is:
→