Variables

Q. In the algebraic expression 5+xy, 5, x and y are ___________respectively.

1. variable, constant and variable
2. variable, variable and constant
3. constant, variable and variable
4. variable, constant and constant

Q. Which of the following is correct regarding variables ?

1. We can perform addition on variables
2. We can perform multiplication on variables
3. We cannot perform division on variables
4. None of the above.

Q. Choose the expression with exactly one variable.

1. 2a + b - 7
2. a + 2
3. 1
4. a + b + c

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

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

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

Q. Which of the following is a variable in our daily life ?

1. Cost of 1 kg apples
2. Weight of 1 kg apples
3. Hours in a day
4. Seconds in a minute

Q. Which of the following is a variable?

1. 5
2. Number of months in a year
3. Number of days in a week
4. Temperature of a place in a day at different times

Q. How many variables are there in the given equation 2a + 3b + 4c = 3?

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

Q.

All integers are constants not variables.

1. True
2. False

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

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

Q. How many variables are there in the given equation 2x + 3y = 5?

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