Explain why 7×11×13+13 and 7×6×5×4×3×2×1+5 are composite number
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are u studying 10 class?????
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we have=> 7×11×13+13
=13(7×11+1)
=13×78
=13×13×2×3
we know that a number which has more than two factors is called composite number.
Therefore, it is a composite number.
we have=> 7×6×5×4×3×2×1+5
=5(7×6×4×3×2×1+1)
=5(1008+1)
= 5×1009
we know that a number which has more than two factors is called composite number.
Therefore, it is a composite number.
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