Question

Match the items of Column I with that of Column II:

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 is 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.