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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