9th
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Mathematics

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Hemali Pandya

4 years

Mathematics

9th

grade

Number System

Hemali Pandya

3.7K
plays

20 questions

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1. Multiple Choice
45 seconds
1 pt
What is a repeating decimal or decimal that terminates called ?
Natural Number
Irrational Number
Rational Number
Whole Number
2. Multiple Choice
45 seconds
1 pt
Which of the following is not a part of the set of rational numbers ?
-42
5/0
0
14.7
3. Multiple Choice
45 seconds
1 pt
Which of the following is an example of an irrational number?
-2/3
.75575557654..
23
0
4. Multiple Choice
45 seconds
1 pt
Which of the following is true about irrational numbers?
They are terminating decimals.
They are non terminating and non-recurring decimals.
They are fractions.
They are natural numbers.
5. Multiple Choice
30 seconds
1 pt
Which of the following number is an irrational number?
√9
√49
√100
√120
6. Multiple Choice
45 seconds
1 pt
Which statement is NOT true?
0.121212… is a rational number.
0.34353637 is an irrational number.
8.14 is a rational number.
5.12345… is an irrational number.
7. Fill in the Blank
3 minutes
1 pt
What is the $\frac{p}{q}$ form of 0.252525... ?
8. Multiple Choice
30 seconds
1 pt
To convert a whole number into a rational number put it over_________
10
0
1
100
9. Multiple Choice
45 seconds
1 pt
Which of the following statements is true?
Every rational number is an integer
Every whole number is a natural number
Every integer is a whole number
Every whole number is a rational number
10. Multiple Choice
45 seconds
1 pt
Out of the given numbers , which number is a natural, whole, integer, rational, and real number ?
-4
5.1
0.7
3
11. Multiple Choice
3 minutes
1 pt
$\frac{3}{5+2\sqrt{3}}$ can be expressed with rational denominator as ________________________ ?
$\frac{15\ -\ 6\ \sqrt{3}}{13}$
$\frac{15\ -6\sqrt{3}}{37}$
$\frac{6\sqrt{3\ }\ -15}{13}$
$\frac{6\sqrt{3}\ -15}{37}$
12. Multiple Choice
45 seconds
1 pt
What is the value of $3^{-3}$ ?
27
$\frac{1}{27}$
-27
$\frac{-1}{27}$
13. Multiple Choice
3 minutes
1 pt
What is the value of (3 - √3) (2 - √2) ?
6 - √6
6 -2√3 - 3√2 + √6
6 + √6
6 -2√3 - 3√2 - √6
14. Multiple Choice
1 minute
1 pt
What is the value of 5√3 × √12 ?
30
6
√180
15√12
15. Multiple Choice
2 minutes
1 pt
√5 is an irrational number. Which of the following operations on it will give a rational number?
Multiplying by $\sqrt{5}$ and then adding $\sqrt{5}$ .
adding $\sqrt{5}$ and then multiplying by $\sqrt{5}$ .
adding $\frac{1}{\sqrt{5}}$ to it.
multiplying it by $\sqrt{9}$
16. Multiple Choice
3 minutes
1 pt
Which of the following is a rational number between 15 and 16 ?
$\frac{63}{4}$
$\frac{15}{2}$
$\frac{16}{2}$
$\frac{31}{5}$
17. Multiple Choice
30 seconds
1 pt
Which of the following is the symbol used to denote the collection of rational numbers ?
N
Z
W
Q
18. Multiple Choice
45 seconds
1 pt
How many rational numbers are there between any two given rational numbers ?
100
10
1000
None of the above is correct
Infinitely Many
19. Multiple Choice
45 seconds
1 pt
What is the product of 6 $\sqrt{5}$ and 2 $\sqrt{5}$ ?
12 $\sqrt{5}$
60
4 $\sqrt{5}$
3
20. Multiple Choice
30 seconds
1 pt
Which of the following gives a rational number ?
$\pi\ +2$
$\pi\times\pi$
$\pi-\ 2$
$\pi\times0$
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