Quiz about Number System

Question 1

Simplify :
$$3(a^{4} b^{3})^{10} 	imes 5(a^{2} b^{2})^{3}$$

Accepted Answer

Covalent bond

Answer

$$15(a^{49} b^{31})$$

Answer

$$15(a^{47} b^{35})$$

Answer

$$15(a^{56} b^{32})$$

Answer

$$15(a^{46} b^{36})$$

Question 2

Simplify: $$(\frac{x^{2} y^{2}}{a^{2} b^{3}})^{n}$$

Accepted Answer

Covalent bond

Answer

$$2b^2$$

Answer

$$8b^4$$

Answer

$$2b^3$$

Answer

$$4b^3$$

Question 3

Every rational number is

Accepted Answer

Covalent bond

Answer

$$A\quad natural\quad number$$

Answer

$$A\quad whole\quad number$$

Answer

$$A\quad  real\quad  number$$

Answer

$$An\quad  integer$$

Question 4

Between two rational numbers...........??

Accepted Answer

Covalent bond

Answer

$$There\quad   are\quad  infinitely\quad  many\quad  rational \quad numbers$$

Answer

$$There\quad  are \quad only \quad rational \quad numbers \quad and \quad no \quad irrational \quad numbers$$

Answer

$$There\quad  is\quad  exactly\quad  one\quad  rational\quad  \quad number$$

Answer

$$There \quad is \quad no \quad rational \quad number$$

Question 5

Decimal representation of a rational number cannot be......?

Accepted Answer

Covalent bond

Answer

$$ Terminating$$

Answer

$$Non-terminating/ repeating$$

Answer

$$Non-terminating$$

Answer

$$Non-terminating/ Non-repeating$$

Number System Cbse Class 9 Maths Problems and Solutions