Optional Math Of Class 8

Which is the first component of order pair (2,3)

• a. 2

• b. 3

• c. 2,3

• d. 3,2

If (a-1,b)=(2,4) the value of a and b are,

• a. 2 and 3

• b. 3 and 4

• c. 1 and 4

• d. 2 and 4

Which of the following order pair are equal?

• a. (a, b) and (b, a)

• b. (4, 5) and (8-4, 10-5)

• c. (4-2, 6-3) and (3-1, 7-3)

• d. All of the above

If A = (2,3) and B = (a, b) then A $\times$  B is,

• a. {(a, 2), (b,2), (3, a), (3, b)}

• b. {(a, 2), (b, 2), (a, 3), (3, b)}

• c. {(a, 2), (b,2), (a,3), (b, 3)}

• d. {(2, a), (2, b), (3, a), (3, b)}

What is the inverse relation of R = {(a, 2), (b,2), (3, a), (3, b)}

• a. {(a, 2), (b,2), (3, a), (3, b)}

• b. {(a, a), (b,2), (3, a), (3, b)}

• c. {(a, 2), (2, 3), (3, a), (3, b)}

• d. {(2, a), (2, b), (a, 3), (b, 3)}

Which of the following relation is function?

• a. {(1,2), (1,3), (2,4)}

• b. {(2, 3), (3, 4), (4, 5)}

• c. {(a ,b), (a, c), (c, d)}

• d. None of them

What is the domain of function f = {({(a, 2), (b,2), (3, c), (3, d)}

• a. {a,b,3,2}

• b. {2, c, d}

• c. {a, b, 3)

• d. {a, b, 2, 3}

Which is the monomial term?

• $a.\ 2x+3$
  

• $b.\ 3x^2$

• $c.\ 3x+4y+6$

• $d.\ \frac{x}{y}+2$

Which of the following is polynomial?

• $a.\ x+2$

• $b.\ \frac{x^2}{2}+3x+2$

• $c.\ y^6+3y^2+3y-4$

• $d.\ All\ of\ them$

The standard form of polynomial  $4x^7+3x^5+2x+9x^2-3x^4$  

•  $a.\ 4x^7+3x^5-3x^4+2x+9x^2$  

•  $b.\ 4x^7+3x^5-3x^4+9x^2+2x$  

•  $c.\ 4x^7-3x^4+2x+9x^2+3x^5$  

•  $d.\ 3x^5-3x^4+2x+9x^2+4x^7$