explain why 7×6×5×4+5 is a composite no.
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7*6*5*4+5 is a composite no. because all the no. (ie. 7,6,5 and 4) are composite no. and as we know when composite no. is added, subtracted, multiplied or divided with a composite no. the result is always composite.
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SOLUTION:
7× 6 × 5 × 4 × 3 × 2 × 1+ 5
= 5040 +5=5045
= 5045 = 5×1009
We know that a number is called a composite number if it has at least one factor other than 1 and the number itself.
Here, 5045 is the product of 2 prime factors 5 and 1009 .
Hence,7× 6 × 5 × 4 × 3 × 2 × 1+ 5 is a composite number.
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