Show that 7 x 11 x 13 + 13 is a composite number
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Show that 7 x 11 x 13 + 13 is a composite number
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7×11×13+13 may be written as, i.e. 13 * (78). So other than 1 and the number itself, 13 and 78 are also the factors of the number. Further, 78= 39 x 2. So, 39 and 2 are also it's factors
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Answer:
it is a composite No.
Step-by-step explanation:
7*11*13+13
= 13 (7*11*1+1)
=13 (78)
since it is express in more than 2 factors
therefore it is a composite No.
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