Variable and Constant

Q. Which of the following is a variable?

1. $5$
2. $a$
3. $\frac{13}{5}$
4. $\pi$

Q. An entity whose value is fixed in an expression is called a constant.

1. True

2. False

Q. Is infinity a variable or constant?

Q. How many variables are there in the given algebraic equation?

$\frac{5x+y}{3z+k}=9f+2$

1. 4
2. 3
3. 2
4. 5

Q. How many variables are present in the given expression $5x+6y$ ?

1. 3
2. 4
3. 5
4. 2

Q. Which among the following expressions is a constant?

1. x+1
2. a+b
3. 2j
4. 55 + 2

Q. How many variables are present in the given expression $5x+6y$ ?

1. 2
2. 3
3. 4
4. 5

Q. Which of the following can be used as a variable?

1. 5
2. a
3. $\frac{13}{5}$
4. $\pi$

Q. Which of the following is a variable?

$5,x,3.14,\frac{3x}{2x}$

1. $\frac{3x}{2x}$
2. $5$
3. $x$
4. $3.14$

Q.

A ___ is a literal number or any symbol which attains different values.

Q. Algebraic equations are made up of
(i) variables
(ii) constants
(iii) operators

1. Only (i)
2. Only (ii) and (iii)
3. Only (iii)
4. All (i), (ii) and (iii)

Q. Match the following with suitable nomenclatures.

1. Equation
2. Constant
3. Expression
4. Variable

Q. How many variables are present in the given expression $5x+6y$ ?

1. 5
2. 2
3. 3
4. 4

Q. How many variables are present in the given expression $5x+6y$ ?

1. 3
2. 4
3. 2
4. 5

Q. How many variables are present in the given expression $5x+6y$ ?

1. 5
2. 3
3. 4
4. 2

Q. How many variables are present in the given expression $5x+6y$ ?

1. 3
2. 4
3. 5
4. 2

Q. Find the number of variables in the expression: $5x+8y+7$.

1. 4
2. 2
3. 1
4. 3

Q.

Convert the following statements to algebric expressions assuming a suitable variable for each of them.

The speed of a car is $10km/hr$ more than the speed of a bike.

Q. Which of the following can be used as a variable?

1. 5
2. $\frac{13}{5}$
3. a
4. $\pi$

Q. Algebraic equations are made up of
(i) variables
(ii) constants
(iii) operators

1. Only (i)
2. Only (ii) and (iii)
3. Only (iii)
4. All (i), (ii) and (iii)

Q. Match the following with suitable nomenclatures.

1. Constant
2. Variable
3. Expression
4. Equation

Q. How many variables are present in the given expression $5x+6y$ ?

1. 3
2. 4
3. 5
4. 2