is 3×5×7+7 a composite number. justify your answer
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Answered by
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3×5×7+7
7 (3×5+1)
7 (15+1)
7 ×16
7×2×2×2×2
Therefore, the number has more than 3 factors.
Therefore,it is a composite number
7 (3×5+1)
7 (15+1)
7 ×16
7×2×2×2×2
Therefore, the number has more than 3 factors.
Therefore,it is a composite number
Answered by
0
42 is justify answer
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