CBSE Important Questions of Relations and Functions | Zigya

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 Multiple Choice QuestionsShort Answer Type

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1. Find the values of x and y when.

space space space space space space space space left parenthesis 2 straight x comma space straight x plus straight y right parenthesis space equals space left parenthesis 6 comma space 2 right parenthesis
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2. space space space space space space space space open parentheses straight x over 3 plus 1 comma space straight y minus 2 over 3 close parentheses equals open parentheses 5 over 3 comma 1 third close parentheses,  find the values of x and y.
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3. Find the values of x and y when

(x2--x, y-3y+2)=(0, 0)
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4.

If A = {a, b, c} and B = {p, q}, then find :

(i) A x B (ii) B x A (iii) A x A (iv) B x B (v) n (A x B) (vi) n (B x A) (vii) n (A x A) (viil) n (B x B).

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5. Let A = {1,2,3},   space space space space space space space space straight B space equals space left curly bracket straight x space colon space straight x space is space even space prime space and space 10 space less or equal than space straight x space less or equal than space 27 right curly bracket

Find A X B

 

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6.

If A = {1, 2}, B = {3, 4} and C ={x : x is even x divides 15}, that show that 


space space space space straight A space straight x space left parenthesis straight B intersection straight C right parenthesis space equals space straight ϕ

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7.

State whether each of the following statements are True or False. If the statement is False, re-write it correctly.

 (i) P = {m, n} and Q = {n, m}, then P x Q = {(m, n), (n, m)}

(ii) If A and B are two non-empty sets, then A x B is a non-empty set of ordered pairs (x, y) such that space space space space straight x element of straight B space and space straight y element of straight A.

(iii) If A = {1, 2}, B = {3, 4}, then space space space space space space space space space space straight A space cross times left parenthesis straight B intersection straight ϕ right parenthesis equals straight ϕ
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8.

If A = {–1, 1}, find A × A × A.

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9. Let A = {–1, 1}, B = {2, 3}, C = {3, 5} be subsets of real numbers.


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10. Let A = {–1, 1}, B = {2, 3}, C = {3, 5} be subsets of real numbers.

n(A X A)


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