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JEE MATHEMATICS MCQ: RELATIONS

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In a set of ants in a locality, two ants are said to be related iff they walk on a same straight line, then the relation is

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Correct option: D

Equivalence

Option D (Equivalence) is correct because the relation is reflexive (an ant walks on the same line as itself), symmetric (if ant A walks on the same line as ant B, then ant B walks on the same line as ant A), and transitive (if ant A walks on the same line as ant B, and ant B walks on the same line as ant C, then ant A walks on the same line as ant C).

More Questions from RELATIONS

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\mathrm{Z}

of all integers, which of the following relation

R

is not an equivalence relation? Let

\mathrm{N}

denote the set of all natural numbers and

\mathrm{R}

be the relation on

\mathrm{N} \times \mathrm{N}

(\mathrm{a}, \mathrm{b}) \mathrm{R}(\mathrm{c}, \mathrm{d})

a d(b+c)=b c(a+d)

\mathrm{R}

W

denote the words in the English dictionary. Define the relation

R

R=\{(x, y) \in W \times W \mid

x

y

have at least one letter in common

\}

S

be the set of all real numbers. Then, the relation

R = \{ \left( {a,\;b} \right):1 + ab > 0\}

S

X

be a family of sets and

R

be a relation on

X

A

is disjoint from

B

R

R

N

R = \left\{ {\left( {x,\;y} \right):4x + 3y = 20} \right\}

. Which of the following belongs to

R