MATHS CH-1 NUMBER SYSTEM
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7 Terms
Q: What is a Rational Number?
A number that can be written as p/q, where p and q are integers and q ≠ 0. Example: 1/2, -3/4, 5.
Q: What is an Irrational Number?
A number that cannot be written as p/q. Its decimal goes on forever without repeating. Example: √2, π.
Q: Is √2 a rational number?
No, because it cannot be expressed as a fraction and its decimal is non-repeating.
Q: What are Real Numbers?
All Rational and Irrational numbers together. Example: -3, 0.5, √2, π.
Q: What is a terminating decimal?
A decimal that stops after a few digits. Example: 1.25 = 5/4.
Q: What is a non-terminating repeating decimal?
A decimal that never ends but has a repeating pattern. Example: 0.333… = 1/3.
Q: Can every real number be plotted on a number line?
Yes, every real number has a position on the number line.