1.Set Theory
easy

निम्नलिखित समुच्चयों को रोस्टर रूप में लिखिए

$D =\{x: x$ एक अभाज्य संख्या है जो संख्या $60$ की भाजक है $\}$

Option A
Option B
Option C
Option D

Solution

$D = \{ x:x$ is a prime number which is divisor of $60\} $

$2$ $60$
$2$ $30$
$3$ $15$
  $5$

$\therefore 60=2 \times 2 \times 3 \times 5$

The elements of this set are $2,3$ and $5$ only.

Therefore, this set can be written in roster form as $D=\{2,3,5\}$

Standard 11
Mathematics

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