Question

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

Solution

A = {1, 2, 3}
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The only even priome number is 2 and it does not lie between 10 a nd 27.
∴ $space space space space space space space space space space space space straight B space equals space left curly bracket space right curly bracket space straight ϕ$
$space space space space space space space space space space space space space rightwards double arrow space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space straight A space space straight X space space space straight B space equals space straight A space straight X space straight ϕ space equals space straight ϕ$

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Trigonometric Functions

Some More Questions From Trigonometric Functions Chapter

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).

If A = {–1, 1}, find A × A × A.

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

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

n(A X A)

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