1.Set Theory
easy

ગણને યાદીની રીતે લખો : $C = \{ x:x{\rm{ }}$ એ જેના અંકોનો સરવાળો $8$ થતો હોય તેવી બે અંકોની સંખ્યા છે. $\} $

Option A
Option B
Option C
Option D

Solution

$C = \{ x:x{\rm{ }}$ is a two-digit natural number such that the sumof its digits is $8\} $

The elements of this set are $17,26,35,44,53,62,71$ and $80$ only.

Therefore, this set can be written in roster form as $C=\{17,26,35,44,53,62,71,80\}$

Standard 11
Mathematics

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