Explain why 7 × 11 × 13 + 13 and 7 × 6 × 5 × 4 × 3 × 2 × 1 + 5 are composite numbers.

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Solution

EXPLAIN: Why and are composite numbers
We can see that both the numbers have common factor 7 and 1.
And we know that composite numbers are those numbers which have at least one more factor other than 1.
Hence after simplification we see that both numbers are even and therefore the given two numbers are composite numbers

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7 \times 11 \times 13 + 13

7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 + 5

Explain why 7*11*13+13 and 7×6×5×4×3+5 are composite numbers.

Explain why $7 \times 11 \times 13 + 13$ & $7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 + 5$ are composite numbers ?

7 \times 11 \times 13 + 13

7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 + 5

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