2.Relations and Functions
easy

संबंध $R =\left\{\left(x, x^{3}\right): x\right.$ संख्या $10$ से कम एक अभाज्य संख्या है $\}$ को रोस्टर रूप में लिखिए।

A

$\{ (2,8),(3,27),(5,125),(7,343)\} $

B

$\{ (2,8),(3,27),(5,125),(7,343)\} $

C

$\{ (2,8),(3,27),(5,125),(7,343)\} $

D

$\{ (2,8),(3,27),(5,125),(7,343)\} $

Solution

$R = \{ \left( {x,{x^3}} \right):x$ is a prime number less than $10\} .$ The prime numbers less than $10$ are $2,3,5$ and $7.$

$\therefore R=\{(2,8),(3,27),(5,125),(7,343)\}$

Standard 11
Mathematics

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