2.Relations and Functions
easy

પ્રાકૃતિક સંખ્યાગણ પર સંબંધ $R$ એ $\{(a, b) : a - b = 3\}$ દ્વારા વ્યાખ્યાયિત હોય તો $R=$

A

$\{(1, 4, (2, 5), (3, 6),.....\}$

B

$\{(4, 1), (5, 2), (6, 3),.....\}$

C

$\{(1, 3), (2, 6), (3, 9),..\}$

D

એકપણ નહીં

Solution

(b) $R = \{ (a,\,b):a,\,b \in N,\,a – b = 3\} = \{ ((n + 3),n):n \in N\} $

$ = \{ (4,\,1),\,(5,\,2),\,(6,\,3),\,…..\} $.

Standard 11
Mathematics

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