Question

solve 7×11×13+13 and 7×6×5×4×3×2×1+5 is composite numner or not​

Answer 1

Answer:

yes it is a composite number.

Step-by-step explanation:

• Prime numbers can be divided by one and only itself whereas composite numbers have factors other than 1 and itself.

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It can be observed that 7x11x13+13

=> 13 ( 7x11+1)

=> 13x78

=>13x13x6

• It is given, expression has 6 and 13 as its factors
• Therefore, it is a composite number

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Next is 7x6x5x4x3x2x1+5

=> 5x (7x6x4x3x2x1+1)

=> 5(1008+1)

=> 5x1009

• Therefore the given expression has 5 and 1009 as its factors
• Hence it is a composite number.

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Hope it helps!

Answer 2

Answer:

refer above attachment

Step-by-step explanation:

hope it helps