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प्रश्न
State true or false for the following statement and justify your answer:
2 × 3 × 5 × 7 + 7 is a composite number
औचित्य
सत्य या असत्य
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उत्तर
This statement is true.
Explanation:
2 × 3 × 5 × 7 + 7 = 210 + 7
= 217
= 7 × 31
So it has factors 7 and 31 and is therefore composite.
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