
Q2 If the set A has 3 elements and the set B = {3, 4, 5}, then find the number of elements in (A×B). Ans: Our experts will give the answer soon.
With the knowledge of relations and functions, you can associare different pairs of objects from two sets which are represented as closed  curves. Basically they derive a relation between two objects. Functions are nothing but a special type of relation. This chapter consists of ordered pairs, cartesian product of sets, finding the number of elements, domain, codomain , Range of functions. Real valued functions like polynomial, signum, etc. and their graphs. Idea of function is very much needed for association of one object to a particular type of object.
Download pdf of NCERT Solutions for Class Mathematics Chapter 2 Relations & Functions
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Q2  If the set A has 3 elements and the set B = {3, 4, 5}, then find the number of elements in (A×B). 
Ans:  Our experts will give the answer soon. 
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Draw a quadrilateral in the Cartesian plane, whose vertices are (– 4, 5), (0, 7), (5, – 5) and (– 4, –2). Also, find its area.
Which of the following sentences are statements? Give reasons for your answer.
(i) There are 35 days in a month.
(ii) Mathematics is difficult.
(iii) The sum of 5 and 7 is greater than 10.
(iv) The square of a number is an even number.
(v) The sides of a quadrilateral have equal length.
(vi) Answer this question.
(vii) The product of (–1) and 8 is 8.
(viii) The sum of all interior angles of a triangle is 180°.
(ix) Today is a windy day.
(x) All real numbers are complex numbers.
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