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प्रश्न
Write down separately the prime and composite numbers less than 20.
योग
उत्तर
- Prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17, 19.
- Composite numbers less than 20 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18.
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