Question

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give answer of both questions.

Answer 1

hey here is your answer...

Answer 2

HEY MATE......
HERE IS THE ANSWER.......
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5)
If 6n end with the digit 0, then it must have 2 and 5 as a common factor. But, we know that, the prime factors of 6n are 2 and 3.
Therefore, 6n can never end with the digit 0.

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6)
i)
Given, 7×11×13+13
Now,
7×11×13+13
=13(7×11+1)
=13(77+1)
=13×78
=1014
Here, 1014 is a composite number which can be expressed as the product of primes.
therefore, it is a composite number.

ii)
Given, 7×6×5×4×3×2×1+5
Now,
7×6×5×4×3×2×1+5
=5(7×6×1×4×3×2×1+1)
=5(1008+1)
=5×1009
=5045
Here, 5045 is a composite number which can be expressed as the product of primes.
Therefore, it is a composite number.
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