explain why 3 into 5 into 7 + 7 into 11 is a composite number
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Answer: 3 into 5 into 14 ( 7 + 7 ) into 11 will be a composite number because it's prime factorisation is 2 x 3 x 5 x 7 x 11 and it has all these factors .
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3×5×7+7×11
105+77
182
182 factors are 1,91,etc
hope it helps
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