Question

Column I	Column II
(i) The number of corners of a quadrilateral	(A) =
(ii) The variable in the equation 2p + 3 = 5	(B) constant
(iii) The solution of the equation x + 2 = 3	(C) +1
(iv) solution of the equation 2p + 3 = 5	(D) –1
(v) A sign used in an equation	(E) p
	(F) x

Answer 1

Column I	Column II
(i) The number of corners of a quadrilateral	(B) constant
(ii) The variable in the equation 2p + 3 = 5	(E) p
(iii) The solution of the equation x + 2 = 3	(C) +1
(iv) solution of the equation 2p + 3 = 5	(C) +1
(v) A sign used in an equation	(A) =

Explanation:

(i) The number of corners of a quadrilateral are 4, which is a constant.

(ii) Given, equation is 2p + 3 = 5

Here, variable = p

(iii) Given, equation is `x + 2` = 3

⇒ `x` = 3 – 2    .....[Transposing + 2 to RHS]

⇒ `x` = 1

(iv) Given, equation is 2p + 3 = 5

⇒ 2p = 5 – 3  .....[Transposing + 3 to RHS]

⇒ 2p = 2

⇒ `(2P)/2 = 2/2`  ......[Dividing both sides by 2]

⇒ p = 1

(v) Equal (=) sign is used in an equation.