Question
Which of the following is a rational number?
✓
Answer
- $\sqrt{225}$
Solution:
The numbers of the form $\frac{\text{p}}{\text{q}},$ where p and q are integers and $\text{q}\neq0,$ are known as rational numbers.
$\sqrt{2},$ $\sqrt{23}$ and 0.1010010001... are irrational numbers, since they cannot be expressed in the form $\frac{\text{p}}{\text{q}}.$
$\sqrt{225}=15=\frac{15}{1}$ is a rational number.
Hence, the correct opion is (c).
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
A pyramid is a solid figure, the base of which is:
The probability of an impossible event is:
- 1
- 0
- Less than 0
- Greater than 1
In $\triangle\text{ABC, }\angle\text{C}=\angle\text{A},$ BC = 4cm and AC = 5cm. then, AB =?
→- 4cm
- 5cm
- 8cm
- 2.5cm
If $p^2 + 4q^2 + 9r^2 = 2pq + 6pr + 3pr,$ than the value of $p^3 + 8q^3 + 27r^3$ is:
→→
The factors of $x^4 + x^2 + 25$ are:
→Write the correct answer in the following:
Euclid divided his famous treatise “The Elements” into:
Euclid divided his famous treatise “The Elements” into:
- 13 chapters.
- 12 chapters.
- 11 chapters.
- 9 chapters.
If $x^2+ kx + 6 = (x + 2) (x + 3),$ for all $x$ ,then the value of $k$ is:
→If (2, 0) is a solution of the linear equation 2x + 3y = k then the value of k is:
An exterior angle of a triangle is $80^\circ$ and two interior opposite angles are equal. Measure of each of these angles is:
→